Let's take a closer look at the device of the VAZ 2109 distributor

What do ignition malfunctions promise?

Difficulties in starting the power unit, strange color of exhaust gases, incorrect operation of the engine at idle speed - all this can be the cause of incorrectly adjusted ignition timing.
At the same time, many car enthusiasts blame the carburetor and spend a lot of time cleaning or repairing it. As a result, money and time are wasted, but there is no result.

On the other hand, if the ignition system does not produce a spark, and the spark plugs are regularly filled, then the problem may lie elsewhere.

An incorrectly set angle manifests itself as follows:

1. Powerful detonation appears during operation of the power unit.

It is not difficult to recognize the problem. The main symptom is an uncharacteristic ringing sound that is heard when you press the accelerator pedal.

This malfunction is a common occurrence among motorists who do not properly monitor the condition of their vehicle.

The cause of detonation is early ignition timing, which not only reduces the comfort of driving a car, but can also lead to deformation of the pistons.

Alternatively, the rings may be defective, which in this case will inevitably have to be replaced.

2. The appearance of smoke from the exhaust pipe.

— after starting the power unit, black smoke comes out of the exhaust pipe. This problem is a clear indication of pre-ignition.

3. Motor power decreases.

This is especially noticeable when the vehicle picks up speed.

There may be a delay of several seconds between pressing the gas pedal and the car starting to accelerate. If the car starts to accelerate, it happens jerkily.

4. Fuel consumption increases.

One of the main consequences of incorrect system configuration. This and the problem described above are evidence of late ignition.

This is explained by the fact that when the piston reaches the top point, the fuel mixture does not burn completely and continues to burn even when the piston moves back.

5. Uneven idle.

An incorrectly set ignition immediately manifests itself as engine malfunctions at idle.

In such a situation, experts recommend setting up the system first, and only then starting to check other systems.

Symptoms indicating a malfunction

It is not difficult to determine that a VAZ-2109 distributor with a carburetor is broken. The car will jerk when driving. However, there are no other reasons for this behavior. If the tank is filled with high-quality gasoline, the fuel pump and carburetor are working properly, then the distributor is to blame for the vibrations. When the car picks up speed, the engine will rev.

Malfunctions can also be judged by an engine that refuses to start. When you press the accelerator pedal and increase speed, detonation occurs. This also indicates a non-working distributor. If the dynamics have deteriorated significantly, then the distributor should be checked. When the fuel rises, the first thing you need to do is find out if the breaker is working, and only then turn the carburetor.

Operating principle

UAZ contact ignition system, composition and general structure, diagrams of the contact ignition system.
procedure for installing the ignition on a UAZ car; connection diagram for electronic ignition on a UAZ. On a VAZ-2109 car, the distributor works as follows:

high voltage voltage is generated by a coil according to the principle of electromagnetic induction;
This voltage goes through the high-voltage wire to the central contact in the ignition distributor cap, which is constantly in interaction with the slider;
the latter distributes the electrical impulse over four contacts, each of which corresponds to a specific spark plug;
The slider constantly rotates when the engine is running and thereby closes the central contact with the contacts of each spark plug.

The voltage to generate a spark is supplied to the spark plugs through wires in the order of operation of the cylinders - this is 1-3-4-2. The slider moves due to the drive shaft connected to the engine camshaft.

Distributor operating method

The part is based on a rotating roller, which is connected to the engine camshaft. Parts of the mechanism are attached to the roller, working depending on the rotation of the roller.

Distributor VAZ 2109 device: 1 - sealing ring, 2 - coupling, 3 - adjusting washers, 4 - roller with centrifugal regulator, 5 - support plate, 6 - dust shield, 7 - slider, 8 - Hall sensor, 9 - lock washer, 10 — thrust washer, 11 — body, 12 — vacuum corrector.

The principle of operation of the distributor on the VAZ 2109

The action of the distributor depends on the operation of all elements of the mechanism. So, the distributor mechanism for the VAZ 2109 consists of the following parts:

The rotor rotates and thanks to this it can distribute the spark along the distributor, after which it enters the spark plugs through the wires. The runner (another name for the rotor) receives a spark through the ignition coil using a moving part in the center of the cover.
There is a gap in the Hall Sensor and it is into this that a moving four-tooth screen with an equal number of slots enters.
The distributor also includes a centrifugal and vacuum regulator, a coupling, a housing, an O-ring, adjusting washers, a support plate, a lock and thrust washer, and a correction vacuum.
It is also important to know that for VAZ models 2109, 2108/099 two different types of distribution ignition (i.e. distributor) with different types of covers can be installed. They are very similar in design and distinguish these mechanisms only by the characteristics of the assembly of vacuum and centrifugal regulators. Both covers for distributors can be replaced with one another (as they do not differ).

The procedure for removing and installing the distributor on a VAZ 2109-2108

Ignition timing angle VAZ 2109 carburetor

So, before you begin removal, pay attention to the installation position of the distributor relative to the body. Be sure to remember or mark it so that when installing it, put it in the same position

Then you need to disconnect the high-voltage wires from the distributor cap: 4 spark plugs and one central one from the ignition coil:

It is also necessary to disconnect the plug with wires, which is clearly shown in the photo below:

Then we pull off the thin hose from the vacuum corrector of the distributor:

Now you can proceed directly to unscrewing the nuts securing the VAZ 2109-2108 distributor itself. There are three of them in total: one is located in the center at the top:

And the other two are located on the sides, and it is more convenient to unscrew them with a regular open-end wrench, since a ratchet with a head simply cannot get there. Do not unscrew the side ones completely yet, as you need to set the TDC marks.

But before removing the ignition distributor, it is necessary to install the piston of the 1st cylinder at TDC. To do this, through the hole in the gearbox housing (after removing the rubber plug), you need to align the marks on the housing and the flywheel. With the gearshift lever in the neutral position, use a 19mm key to turn the crankshaft pulley to the required torque. This is what it should look like:

What is a distributor

A distributor is a mechanism that distributes electric current between the spark plugs and is responsible for the appearance of a spark that ignites the combustible mixture in the cylinders. In VAZ 2109 models it is located near the battery, where the cylinder head cover ends. Its official name is ignition distributor-distributor. Car owners use two types of breakers: contact and contactless.

Conventionally, it can be divided into two parts: a cover made of durable material that does not conduct electric current, and the body itself, inside of which there is a shaft ending with a runner with a contact armature. The inlet hole for the high voltage cable is located in the center of the cover, closer to the edges there are outlet holes with contact brushes, from which the wires diverge to the spark plugs. Thus, the lid is an independent and functional part. During operation, under the influence of vibrations, it wears out, cracks or chips form on it, carbon brushes wear out, and it needs to be replaced.

The slider, whose axis receives a central high-voltage wire, rotates, alternately closing the carbon contacts of each spark plug wire in the order in which they must supply a spark to move the pistons in the cylinders. The speed of the runner directly depends on the crankshaft and other engine parameters.

The interruption is performed on the left side of the device according to the principle of a hammer and anvil. The rod mounted on the shaft has a ribbed shape (like a nut). The number of ribs corresponds to the number of cylinders. During rotation, the protruding ribs push the “hammer” towards the “anvil”, and the reduced sides, on the contrary, push them away. This is how connection and interruption of contact is made.

A vacuum corrector connected to the carburetor and throttle, when you press the gas pedal, creates a vacuum that pulls up the lever in the breaker, as a result of which the ignition angle changes and the electric charge is supplied earlier.

High voltage wires

Construction and maintenance of the VAZ 2106 car distributor

Often, the main difficulty when repairing a carburetor VAZ 2109 is the reconnection of high-voltage wires that were previously disconnected from the distributor cover. It's also an ignition distributor.

The difficulty is that many people forget the connection procedure or simply do not know. But in practice, returning high-voltage wires is much easier than understanding the ignition module used on the injection VAZ 2109.

By following a few simple rules, you can easily return the wires to their rightful places.

The ignition distributor cover is installed in its place, that is, on the distributor, only in a single position. Therefore, even if you wanted to, you won’t be able to confuse anything here. Otherwise the lid simply won't fit.
There is an installation mark on the cover, which indicates the location of the wire socket from the first cylinder.
The wires must be connected in the following sequence - 1, 3, 4, 2. Move counterclockwise when looking at the distributor cover from the side of the expansion tank.

If for some reason there are no installation marks on the VAZ 2109 carburetor distributor cover, just follow the connection principle shown in the image.

Typical faults

First, let's look at the symptoms that indicate a faulty distributor:

the vehicle begins to jerk for no reason while driving;
the engine stopped starting normally;
when you press the gas pedal and increase the speed, detonation begins - the knocking of the so-called fingers;
the dynamics of the car have deteriorated significantly - it takes much longer to gain speed;
Gasoline consumption increases.

Repair of the VAZ distributor is carried out in case of such breakdowns:

The device slider is burnt out;
the reason is the distributor cover, on which the contacts have burned out;
the Hall sensor has broken or its bearing element has become loose, and the bearing could jam;
cracks or other mechanical damage may appear on the cover;
there is no contact of the Hall sensor connector;
engine fluid gets into the device, in this case it is necessary to replace the distributor oil seal.

Repair of VAZ 2106 distributor

On older VAZ 2106 cars, a contact distributor is installed, but such a system is not very reliable - due to malfunctions in the contact group (CG), various problems often arise:

due to burnt contacts, the engine may not start;
too large a gap in the CG affects engine power - the engine stops developing speed;
If there is a small gap in the contacts, the motor jerks and works unstably.

To repair the VAZ 2106 distributor, it must be removed and troubleshooting carried out. Removing the device on the “Classic” is very simple, but before repairing it, it is recommended to align the crankshaft to the mark - this will make it easier to install the distributor after repair. We remove the distributor as follows:

rotate the crankshaft until the marks align;
we pull off the tips of the high-voltage wires from the spark plugs;
unclip the two latches of the distributor cap and see what position the slider is in. If it is directed to the fourth cylinder, we make another full turn of the crankshaft. Usually, with correctly set marks, it should be located as in the picture below;
pull off the hose from the vacuum regulator;
unscrew the nut number 13, which holds the distributor, and dismantle the distributor.

Now the PR should be disassembled, perform the following operations:

unscrew the fastening screws of the runner, dismantle the rotor;
unscrew the nut located on the body, hold the screw on the other side of the body with a screwdriver;

dismantle the fasteners, take out the plastic insulator;
tighten the screws holding the contact group (KG);
dismantle the CG;
knock out the shaft pin;
remove the oil deflector and washer from the roller, pull the shaft out of the housing;
to get to the bearing, remove the locking washer of the ignition timing regulator rod from the top of the housing;
Unscrew the bolts securing the regulator, dismantle the ignition timing mechanism;
unscrew the screws (2 pcs.) that hold the bearing fixing plates;
dismantle the bearing, lifting it from different sides;

The disassembly is now complete, all that remains is to troubleshoot and replace worn parts.

Possible malfunctions of the BSZ

If the VAZ 2109 ignition switch stops receiving pulses, it means that the wires may be broken and need to be replaced or connected. The second reason lies in the malfunction of the Hall sensor. Its condition is checked with a voltmeter. And if there is no voltage in an electronic device, it needs to be replaced.

The Hall sensor is located inside the distributor housing. To change it, you need to open the cover and disconnect the old sensor. Damage to the wires is also possible between the sensor and the ignition coil. The pulse supply is disrupted if the wires are loosened or their ends are oxidized.

Interruptions in the operation of the VAZ 2109 engine occur for various reasons. For example, carbon deposits and dirt accumulated on the walls or rotor of the distributor are observed. There are other negative factors.

Causes	Actions
The electrodes are worn out or the spark plugs have been exposed to oil that flows from under the seal, and carbon deposits have formed on them. Cracks in the ceramic body of the spark plugs also do not contribute to the smooth operation of the engine.	Oily spark plugs can be washed in gasoline, dried, and the carbon deposits removed. But repair will not help worn electrodes or cracked insulators. Such spark plugs require immediate replacement.
If everything is fine with the spark plugs, but the engine does not start.	The carbon brushes in the breaker housing should be checked.
Faulty ignition switch.	It requires adjustment.

The engine changes operating mode slowly and does not produce maximum power for the following reasons. The ignition timing is incorrectly set. Then it needs to be adjusted.

It happens that the weights in the ignition timing regulator get stuck. This occurs due to the weakening of the springs, which have exhausted their service life and need to be replaced. You can repair this defect yourself.

The correct operation of the ignition distributor greatly affects the functionality of the engine as a whole. If the unit breaks down, it will be impossible to start the engine, so every car owner should know everything about this device. What functions does the distributor perform on a VAZ 2109 car and how to replace it - find out in this article.

Signs that they need to be replaced

The main sign of the need to replace spark plugs is misfires (tribling). This is not always due to problems with spark plugs. To finally decide on the need to replace them, the easiest way is to install a known good one instead of the problematic spark plug.

The easiest way to identify a possibly faulty spark plug is with the engine running. To do this, it is necessary to sequentially disconnect the high-voltage wires (or the connector of the individual ignition coil) from each of them. The non-working cylinder will be the one from which, when disconnected, the nature of the engine operation does not change.

Also signs of a required replacement of spark plugs are:

visual malfunction (contamination, carbon deposits in the gap area, change in the normal gray color of carbon deposits, its wetting, mechanical chips on the insulator);
unstable engine speed;
increased smokiness of exhaust gases;
engine detonation;
message or on-board computer.

Reasons for their natural and premature wear

The spark plug operates under extremely extreme conditions:

high temperature in the working cylinder;
aggressive environment in the form of a mixture of fuel, air and oil;
high pressure during ignition;
high voltage and temperature of electric spark.

The simultaneous action of these factors leads to an intensification of the processes of their natural wear. This process can be significantly accelerated in the following cases:

reduction of compression, wear of valve stem seals due to oil entering the working volume;
incorrect setting of the ignition angle, leading to the formation of increased carbon deposits;
choosing spark plugs that do not match the engine brand;
misfire in cylinders;
incorrect gasoline/air ratio due to malfunctions of the flow meter, air leaks;
incorrect operation of injectors.

Do-it-yourself ignition adjustment on a VAZ 2109

Ignition problems lead to incorrect engine operation. Adjusting the ignition of the VAZ 2109 with your own hands allows you to quickly and cheaply adjust the settings. Before starting, be sure to read the instructions for adjusting the ignition.

Diagram for setting ignition timing.

Lada 2109 with an injection engine is equipped with an electronic ignition module. Ignition adjustment is carried out by programming the electronic control unit. It is impossible to carry out such a procedure without a service station - you need special software.

Checking and adjusting the ignition timing is done while the engine is idling. The crankshaft speed should be in the range of 820–900 rpm.

Photo of the ignition switch on a VAZ 2109.

Warm up the engine to 90 degrees.
Set the crankshaft speed at 820–900 rpm. If the idle speed goes beyond the limits, adjust the amount of fuel assemblies in the carburetor.
Disconnect the vacuum hose from the fitting.
Turn off the car engine.
Remove any gap in the vacuum hose.
Unscrew the three nuts securing the breaker-distributor.
Remove the rubber plug from the gearbox housing - there is an inspection hole for the flywheel.
Disconnect the first cylinder wire from the camshaft cover.
Connect the strobe light to the place of the disconnected wire and to the battery.
Start the car - the strobe light will begin to send impulses in time with the flywheel.
Rotate the camshaft until the marks are compared with the mark on the flywheel.
Mark the label.

Adjustment by marks is impossible without the device.

There are ways to adjust without a strobe. To make adjustments using a light bulb, you will need a crankshaft wrench and a standard 12-volt light bulb.

Setting the ignition timing by loosening the spark timing sensor.

Use a special wrench to turn the crankshaft until the marks match. If you do not have a crankshaft key, engage 4th gear and push the car until the marks match.
Connect a 12-volt light bulb to the wire connecting the distributor and the ignition coil.
Connect the light bulb to ground using the second wire.
Connect the central wire to ground Lada 2109.
Loosen the bolts on the distributor body and turn on the ignition - the light should light up.
Rotate the body to the right until the light goes out.
After the light goes out, smoothly turn the distributor to the left.
Stop when the light comes on.
Tighten the housing bolts.

To carry out this type of economical ignition adjustment of the Zhiguli 2109, two people will be needed. One should be in the interior of the Nine, the second should rotate the distributor.

Turn on the ignition and watch the tachometer needle.
A second person must loosen the bolts securing the distributor and turn it.
When you turn the key in the ignition, the tachometer needle sharply deviates and returns to zero.
The distributor should remain in the position when the tachometer needle deviates.
This method of adjusting the ignition timing requires patience, as it is very difficult to adjust the first time.

Ignition check

To check the adjustment of the VAZ 2109 ignition system, you need to drive out onto a flat road.

Accelerate the car to 50 km/h.
Engage 4th gear and press the gas pedal all the way.

https://youtube.com/watch?v=PlArkxUcB1E

The appearance of quiet and short detonation sounds means the ignition is set correctly.

Causes of ignition problems

As mentioned earlier, in order to set the ignition in the electronic system you will have to go into the “brains”, there you can also check the functionality of the sensors, so they greatly influence the operation of the system, regardless of the type of ignition.

On the electronic type, the main causes of failures are:

Incorrect information transmitted from sensors to the ECU. If the connection to the brain and diagnostics showed strange data coming from one or more control devices, it is necessary to use a “substitution”. The easiest way is to find a car with known good sensors, install them and double-check the results. Here you need to understand that you do not need a new one, but a working sensor, because factory defects are not excluded even on a new mechanism.
The incoming voltage - correct from a technical point of view is 5V, but if due to a violation of the mechanical integrity of the wires or another problem with the car’s electronics, this voltage changes, the sensor readings will also change after it. If this happens, the ECU begins to adjust engine operation based on incorrect data, which leads to incorrect operation of the entire mechanism as a whole. To check this breakdown, you will need a known-good system of wires leading to the sensor or a donor car into which you can install your sensor and test the system for functionality.
Broken ECU - if the previous two options did not give a visible result, and installing your sensor and wiring in a working machine does not change its performance, only this option remains. You can try to reflash the “brain” of the car, but due to its low cost, it is better to immediately buy a new ECU and install it on the car.

ECU diagnostics Before moving on to the radical measures proposed in the third option, it is worth additionally checking the correct location of the marks. In cars with contactless ignition, this is the ignition installation of the VAZ 2114, and for cars with an electronic system, debugging is important to check the synchronization of the injection system with the gas distribution mechanism.

Distributor device with Hall sensor

On the VAZ-2109, the manufacturer installed a contactless type distributor equipped with a Hall sensor. It is four-spark, additionally equipped with a centrifugal and vacuum corrector.

In addition to correctors, the device has other elements that contribute to proper operation. Thus, the distributor is equipped with a special plastic screen. It is necessary to protect the working surfaces of the mechanism from dust and dirt. The slider mounted on the distributor rotor has a constant resistance of about 1 kOhm. In addition, the design includes thrust washers, lock washers and O-rings. The body is one-piece, aluminum.

Purpose of the distributor cover

The design of the ignition distributor cap (aka distributor) has remained and remains virtually unchanged throughout the entire history of the use of this device as part of the ignition system of gasoline engines:

On most ignition caps, the contacts for the spark plug wires are marked with numbers that correspond to the serial numbers of the corresponding cylinders
In addition to protecting the distributor mechanism itself from moisture and dirt, it also serves the purpose of alternating the supply of high-voltage current from the ignition coil winding through high-voltage wires to the spark plugs
It is because of this narrow specialization that the distributor cap has undergone almost minimal changes along the evolution of all car systems

Let's look at the design and operating principle of this much-needed part.

The distributor cap is a molded part made of non-electrically conductive material (insulator) that has the following device:

Metal contacts are pressed into this part - these are the side and central electrodes
The number of side electrodes strictly corresponds to the number of engine spark plugs (but not cylinders, do not forget that there are engines in which there is more than one spark plug for each individual cylinder); the distributor cover on the VAZ 2109 in our case has four side electrodes
A high-voltage (armor) wire coming from the ignition coil is connected to the central electrode from the outside
To the side electrodes - high-voltage (armor) wires going to the spark plugs
Inside the cover itself there is a central contact equipped with a terminal that has a spring-loaded contact element (“carbon”), which transmits voltage to the central (main) contact of the distributor rotor (ignition distributor)

Schematic design of the lid

When installing the cover on the distributor body, it is important to take into account not only the order in which the armored wires are connected, but also the orientation of the cover in relation to the “nose” of the runner is also important
The ignition distributor cap is attached to the distributor body using latches or screws (the distributor cap on the VAZ 2109 is secured with screws)
To prevent the formation of condensation under the lid, it has a special ventilation hole

Features of device operation

The “sore spot” of the distributor cover and rotor (ignition distributor) are the electrodes pressed into it:

The reason is simple - there is no direct contact between these electrodes and the central electrode on the slider, so a spark jumps when they approach through the air, which causes the side electrodes to char rather quickly
In order for the distributor cap to function reliably, it must be kept clean both outside and inside.
It is necessary to periodically check the condition of the electrodes contained in it.
If carbon deposits or oxides appear on them, clean the contacts of the VAZ 2109 distributor cover with a flat file
It is not recommended to use sandpaper due to the high probability of abrasive particles getting into the distributor mechanism
In addition, you should carefully monitor the external condition and mobility of the central contact (“coal”) of the cap electrode

Distributor cap as an anti-theft device

Due to the increasing number of car thefts, some “savvy” owners began to use the distributor cap as an additional anti-theft device:

By removing the cover, which can be removed quite easily, you will make it more difficult for a thief who wants to steal your car.
Firstly, the car simply won’t start without it.
Secondly, even if he finds or has a cap with him, having removed the armored wires, you did not mark their connection order, connecting at random it is difficult to quickly achieve correct operation of the ignition

Compression check

After checking the compression, you can breathe a sigh of relief or worry, since the cost of the repair depends on the result.

Impaired compression often causes the presence of oil in the VF, and also causes a number of other problems.

Compression check

To work you will need:

Compressometer;
A rag in oil, which you will use to determine the compression stroke;
Adapter for spark plug holes. It is used when checking the combustion chamber for leaks;
Compressor.

Now let's start checking.

Warm up the engine to operating temperature, then turn off the fuel supply.
In the case of a carburetor, you need to remove the hose, clamp or squeeze it with something, or lower it into a container.
If you have an injector, remove the fuel pump fuse, start the engine and let it run. As soon as the fuel in the fuel rail runs out, it will stall on its own.
Disconnect the ignition system by removing the center wire from the distributor (on the carburetor). The crankshaft position sensor at the injector must be disconnected.
Remove all debris from the spark plug wells so that it does not end up inside the cylinders. Unscrew the spark plugs.
Insert the compression gauge fitting while an assistant starts the engine. The starter should rotate the engine until the pressure gauge needle stops in one position.
By analogy, measurements are carried out on each cylinder, the results are recorded on paper.
To calculate ideal compression, use the formula - 1.2 * Compression ratio.

See your owner's manual for the compression ratio of your engine. Please also note that measurements may have some error.

What you need to know about verification

If the indicator is 12 atmospheres, this indicates that your engine is almost in perfect condition.
When checking the compression on a cold engine, the compression readings will be significantly lower. Perform the test only on the engine at operating temperature.
If the battery is partially discharged, the test data will also not be accurate.
The increase in compression occurs due to the combustion of oil in the cylinders.

Replacing the distributor (ignition distributor) on a VAZ 2108-VAZ 21099

Direct replacement

1) First, de-energize the engine system by disconnecting the negative terminal from the battery. (Instructions and procedures are described in the article: “Replacing the battery” in the first paragraph).

2) Next, disconnect the high voltage wires from the distributor cover.

3) Remove the vacuum hose from the vacuum regulator fitting.

4) Then completely unscrew the top nut securing the distributor and wire holder.

5) Remove the holder from the car engine.

6) Use your hands or a screwdriver to disconnect the wire block from the distributor.

7) Now unscrew the two remaining nuts that secure the distributor at the bottom: use a wrench to unscrew the left nut of the distributor.

Then unscrew the right nut.

Installation: 1) First, remove the two screws from the cover and remove it.

2) Then turn the slider with strictly outer contact opposite the “first cylinder” terminal located on the cover.

3) Install the distributor in the reverse order of removal.

4) Place the negative terminal on the battery and set the initial ignition timing. (We recommend that you familiarize yourself with the process in the article: “Installing the ignition”).

Changing the cover

1) First, disconnect all high-voltage wires from the cover.

2) Then use a Phillips screwdriver to remove the screws holding the plastic cover to the distributor.

3) Remove the cover and replace it with a new one.

Note! The cover on the distributor is installed in only one position. And the high voltage wires are put on the cover in the order: 1-3-4-2. There is a marking “1” on the distributor cover itself, start counting from there in order, counterclockwise.

Replacing the slider:

1) First, remove the cover according to the instructions described above.

2) Next, remove the slider from the shaft by pulling it with your hand.

Note! The slider is installed in its place only in one position, when the slot on the shaft is directed in the opposite direction from the contact!

Additional materials Below is a link to a video with information on today's topic:

Reasons why oil can get into the distributor

In a VAZ 2109 car, oil from under the distributor can get inside this product through the oil seal on the shank. Externally it will look something like this. When disassembling the distributor, rust is clearly visible on the slider, the ember installed there is often completely erased, and everything under the screen is covered in oil.

The reason that led to the appearance of oil in the distributor of the VAZ 2109 is the clogging of a small hole in the base of the carburetor, which is structurally related to the ventilation system of the crankcase of the engine.

At idle speed of the engine, excess pressure arises in the crankcase, which forces oil through the oil seal into the distributor. To prevent the problem from reoccurring, the hole mentioned above should be cleaned. But the operation is quite complicated technically. Therefore, it should be performed at a service station.

Another reason leading to the appearance of oil in the distributor on the VAZ 2109 is severe wear of the oil seal.

To identify and eliminate this malfunction, the distributor must, at a minimum, be removed and, after completing the required amount of work, reinstalled.

Signs of a faulty contact system

As we know today, there are distributors with non-contact and contact spark generation systems, let’s begin to understand the contact system. If you have a contactless device, then the instructions are a little lower for you:

Symptoms that appear in the contact system are usually caused by either a change in the gap between the contacts or their contamination
Since the performance of the contact distributor (see Design of the VAZ 2109 distributor: the difference between contact and non-contact ignition systems and ignition timing adjustment), the condition of its contacts has a huge impact, unlike a device that has a contactless system
The condition of the contacts should be checked every 10,000 kilometers
When a problem arises in the distributor in a VAZ 2109, it should be identified, since this includes wear on the shaft cams, the development of the contact stop that slides along them
Possible wear of the bushings in which the shaft rotates, as well as destruction of the bearing in the movable contact plate, weakening of the contact spring, possible jamming of the contacts on their axis, as well as their burning, erosion or contamination
Such malfunctions inevitably lead to changes in gaps or poor contact in the contacts
And as a result of this - loss of engine power, complete cessation of its operation at idle, a noticeable decrease in throttle response, and the appearance of jerks when the gas pedal is sharply pressed
With severe wear or destruction of the bearing in the movable contact plate, as well as with critical wear of the bushings, and a break in the negative shunt, a violation of the contact of the lever or contact pair, or even the contact itself, causes popping noises in the muffler or intake manifold
This can also occur when the noise suppression resistor, which is located in the distributor runner, burns out
If the engine does not start at all, this is most often due to either a lack of contact or a lack of gap in the contact pair, and also a breakdown of the slider (remove the slider and purchase a new one)
The complete absence, contamination or burnout of contacts is easily determined visually, and if there is no discharge in the high-voltage armor wire coming from the ignition coil, then you need to replace the wire; if this does not solve the problem, change the coil
If there is a spark on the central wire, but not on the spark plug wires, this indicates a malfunction of the slider
Malfunctions also include - malfunction of centrifugal or vacuum regulators
If a weak spark appears on the central wire or too much sparking between the contacts, this indicates a malfunction of the capacitor
Note: During repairs (and in general) you should not install additional capacitors or capacitors with a larger capacity
At nominal value, the capacitance of the capacitor is allowed within 0.15 - 0.35 microFarad

Typical faults

Among the main and frequent breakdowns, several can be identified:

So, the slider may burn out, and this may cause problems with starting the engine. The engine may start, but will immediately stall.
If the fastening of the distributor is loosened, the OZ could be damaged. This can lead to difficulty starting, loss of power, and unstable engine idling. This is also one of the reasons for increased fuel consumption. To fix it, tighten the fastening with a 10 mm wrench - rotate two nuts, as well as one bolt.

Another popular cause of malfunction is the distributor wires (VAZ-2109). They may be connected incorrectly or the order may be out of order. The engine may not start at all, or it will start, but at the same time it will “sneeze”.
Oxidation or destruction of contacts in the cover is a common problem that occurs with ignition distributors for VAZ. If the contacts are oxidized, you can try to restore them with white spirit. This is one of the reasons why the engine troits.
In addition, the distributor cover may be broken. VAZ-2109 quite often worries its owner about this. You can see the breakdown location very easily. It is clearly visible. A failed cover can cause current leaks, causing various interruptions in the operation of the motor.
Another problem associated with the lid is the destruction or abrasion of the contact carbon in the lid. In this case, the engine will not start. To eliminate the cause, replace the coal separately or the entire lid. If the Hall sensor is malfunctioning, the engine will not be able to start. If the wires from the sensor are broken, the result will be the same.

If the vacuum corrector is faulty, the power unit will not pull up. The power and throttle response of the engine will decrease. The vacuum regulator sets the angle under load a little earlier. One of the possible reasons is a lack of tightness in the regulator body or a leak in the hose from the carburetor. Or the rotary plate of the corrector may be stuck. You can try to fix the leak. But often a complete replacement of the distributor on a VAZ-2109 is required. The asking price is up to five hundred rubles.

How does the Hall sensor and centrifugal mechanism work?

On a VAZ-2109 car, the distributor corrects the ignition timing during engine operation. This is possible due to the use of a centrifugal device in the design. It can affect the slider when the engine accelerates sharply. The centrifugal mechanism is similar in design to those devices that were installed on contact-type ignition systems. In addition, the breaker on the VAZ-2109 car is also equipped with a vacuum corrector. When a vacuum is created in the intake manifold, it is then transmitted through a special tube to the corrector chamber. There is a rubber diaphragm there. The latter is connected to a rod, which is fixed to the plate. This is where the Hall sensor is located. This element made it possible to remove the contact group from the distributor and make the operation of the ignition system more stable.

The Hall sensor, together with this plate, can move, thereby adjusting the ignition timing. In this case, the SOP increases or decreases. It depends on the number of revolutions and how intensely the engine picks them up.

Possible causes of failure

There are a number of reasons why the distributor mechanism may break down and after which there is a need for urgent replacement of the part.

Cracks appear on the surface of the cover;
Damage to the Hall Sensor;
Burnt out “runner”;
Burnt contacts in the cover;
Loose bearing that holds the Hall Sensor;
Poor connection of contacts in sensor plugs.

There are also reasons why the mechanism may malfunction.

Here are some of them:

It happens that the ventilation hole becomes dirty and gases escape through the roller, oiling the slider.
Sometimes ground breakdowns occur due to small cracks in the distributor cap.
If the assembly is of poor quality, the mechanism quickly fails (in particular, individual parts).
The bearing may become loose.

Any of these situations (not including poor contact with sensors) require prompt replacement of the distributor part. But sometimes it is enough to simply adjust some defects in the ignition systems and this will instantly return the engine to working condition.

There are a number of reasons that may indicate such a situation.

Detonation is too strong. This problem occurs due to early ignition due to which the rings (piston) are deformed. One of the symptoms is a ringing noise when pressing on the gas pedal.
Dark smoke coming out of the chimney while the car is running is a consequence of the ignition being turned on early.
Fuel is consumed much more, but engine performance has become less. In this case, the ignition starts too late.
Uneven engine operation can be caused by both early and late ignition.

In order for you to be able to regulate the condition (position) of the distributor, you will need to purchase:

A part called a “distributor” performs the function of ignition distribution and has a direct impact on the stability of the functioning of the car engine. The main task that this product is designed to solve is the regulation of spark formation depending on the load, number of revolutions and other engine operating parameters, and the subsequent correct distribution of the resulting spark to all cylinders.

The specified product is an element of the ignition system that solves a complex of problems:

Adjustment of the signal level (electrical), its control, as well as subsequent transmission to the reel-to-reel switch;
Distribution in the required sequence of the resulting spark to the spark plugs, which is set by the ignition strokes;

Today, 2 types of ignition systems are used in car designs: contact and non-contact. There are other technical solutions, but they are used on models, the number of which is negligible. The distributors installed in them differ in design very slightly and are almost identical in basic characteristics. Therefore, having realized that oil is flowing from under the distributor of the VAZ 2109, you can carry out work to eliminate the identified malfunction using the same methods.

Replacing the distributor (ignition distributor) on a VAZ 2108-VAZ 21099

Direct replacement

2) Next, disconnect the high voltage wires from the distributor cover.

3) Remove the vacuum hose from the vacuum regulator fitting.

4) Then completely unscrew the top nut securing the distributor and wire holder.

5) Remove the holder from the car engine.

6) Use your hands or a screwdriver to disconnect the wire block from the distributor.

7) Now unscrew the two remaining nuts that secure the distributor at the bottom: use a wrench to unscrew the left nut of the distributor.

Then unscrew the right nut.

Installation: 1) First, remove the two screws from the cover and remove it.

2) Then turn the slider with strictly outer contact opposite the “first cylinder” terminal located on the cover.

3) Install the distributor in the reverse order of removal.

4) Place the negative terminal on the battery and set the initial ignition timing. (We recommend that you familiarize yourself with the process in the article: “Installing the ignition”).

Changing the cover

1) First, disconnect all high-voltage wires from the cover.

2) Then use a Phillips screwdriver to remove the screws holding the plastic cover to the distributor.

3) Remove the cover and replace it with a new one.

Replacing the slider:

1) First, remove the cover according to the instructions described above.

2) Next, remove the slider from the shaft by pulling it with your hand.

Note! The slider is installed in its place only in one position, when the slot on the shaft is directed in the opposite direction from the contact!

Additional materials Below is a link to a video with information on today's topic:

Dismantling

After dismantling the distributor, you can disassemble the device in order to repair its components, or completely replace the distributor with a new unit.

De-energize the car by removing the negative from the battery;
Disconnect the high-voltage components and the vacuum ignition corrector hose from the distributor;
Remove the drive cable responsible for the throttle valves from the bracket. Next, the fastening nuts are unscrewed and the bracket is dismantled;
Before removing the ignition distributor, apply a mark to the housing of the distributor and drive of auxiliary elements. This way you can simplify your task of setting the ignition timing for its precise setting. The mark is applied to the metal by scratching;
Press the latch holding the block with the power wires and disconnect it from the distributor;
Place the piston from the first cylinder to the top dead center position by moving the engine flywheel clockwise;
Unscrew the remaining ignition distributor screws. The first fastener was removed when removing the damper cable sheath bracket;
Remove your damaged distributor.

Disassembly and repair

Quite often, repair work with the distributor is associated with wear and the need to change the seals (coupling). To change the oil seal, as well as other failed components of the distributor, we bring to your attention the appropriate instructions, as well as video tips.

Remove the ignition distributor cap by releasing the locking clip.
Remove the slider. It is wiped with a clean rag and checked for mechanical damage. If there are chips or cracks, the element must be replaced.
The runner must fit tightly on the shaft, which is achieved due to the presence of a plate spring with a pressing action. If it stretches or breaks, replace it.
There is a resistor in the slider housing. The normal reading of its resistance is 1 kOhm. By measuring the data with an ohmmeter, you can draw conclusions regarding the performance of the component.
Remove the low voltage wiring terminal. To do this, unscrew the mounting screw from the housing.
Remove the plastic screen that serves as dust protection.
A power wire comes from the Hall sensor and is held by the holder's claws. Using a screwdriver, the claws are opened and the wire is removed. Next, you need to unscrew the pair of mounting screws securing the Hall sensor support plate.
Remove the vacuum corrector. Just be sure to disconnect it from the support plate lever before doing this. To perform this operation, carefully remove the retaining ring from the pin.
The next step is to remove the pair of screws that hold the corrector to the distributor body.

Disassembling the unit

Lift the corrector lever slightly, which will allow you to remove it from the sensor plate pin and remove the corrector itself.
These steps will allow you to easily remove the support plate by lifting it with a flat head screwdriver. Remove the element. The plate must be replaced if the bushings are worn out or there is mechanical damage to the unit.
Unscrew the two fasteners to disconnect the plate and the Hall sensor.

You need to remove the oil seal, that is, the coupling. It is located on the distributor shaft. The coupling is closed with a thrust washer. That, in turn, is fixed with a retaining ring. You first need to remove the ring, which will make it possible to remove the thrust washer.
Remove the oil seal by knocking out the pin with a small-diameter borer. Determine the dimensions of the boletus during the repair process.

Checking for damage

There are adjusting washers under the oil seal.
Remove the roller along with the centrifugal regulator from the distributor body.
Clean the housing using kerosene and a dry cloth. Make sure that there are no mechanical damage, chips or cracks on the case.
Examine the condition of the bushings. The roller rotates on them, and with severe wear, the roller begins to become loose. Also, the device is replaced along with the bushings if there are signs of wear, defects, or damage.
To disassemble and replace damaged elements of the centrifugal regulator, you first need to remove the weight springs using a screwdriver.
If the springs are intact and undamaged, not deformed, make notes on their seats. If you mix them up during assembly, problems may arise.
Remove the driven plate along with the screen from the shaft.
Make sure how effectively the weights move along their axes. Movements should be free, without any jamming. If there are problems, the weights are changed.
It is a mistake to check the movement of loads without first removing and cleaning them.

How to replace the distributor?

To dismantle, remove the negative terminal from the battery. Then remove all high-voltage wires that go to the cover. Next, disconnect the hose from the vacuum corrector. After this, remove the bracket, holding the wires. Installation of a new distributor on a VAZ-2109 is possible only in one rotor position. This makes the process easier. There is no need to make any marks. To install a new distributor, you need to install the device in its original place, and then tighten the nuts that secure it to the engine. This completes the replacement procedure.

(Added a photo) And again I’m struggling with the ignition. Then I’m driving, everything is fine, then I start sneezing and coughing again. It cools down again - everything is fine and again there are interruptions. It happens that the pedal is to the floor - and nothing happens... It jerks, as if the ignition is turned off .I changed the wires, the distributor cap and the slider...

I'm driving in the evening... I'm twitching, I decided to see what's wrong with the runner. I opened it, I see a picture that the runner has play... What should I do in such situations? I put a piece of paper to create a tighter fit between the shaft and the runner. I try to start it, it starts, and then it stalls. I turn the starter - there are no signs. Having opened the cover again, I find that the slider has begun to spin around its axis on the shaft without any interference. I look inside. And there is no retaining wall on it at all. 11:00 pm, what stores?! I thought for a very long time what to do. As a result, a thin screwdriver, a self-tapping screw and a lighter solve the problem. (If it were made of PCB, like in the USSR, I would I was never able to pierce it with a hot screwdriver to tighten the screw)

Next, in the morning I bought a slider, and when I arrived at work, I decided to look into the distributor... to see how everything works there. Imagine my surprise when I saw 2 screws there that MUST hold the ignition timing bearing.

I pulled out the whole thing and noticed that the bearing was also crooked... and it was still clamped...

Distributor for VAZ 2109

When a distributor malfunction appears on a VAZ 2109, malfunctions appear in the operation of the entire ignition system. Characteristic signs of distributor problems include unstable engine operation, which is especially noticeable at idle. As well as jerks that occur when driving, and the appearance of vibration of the tachometer needle on cars equipped with a tachometer. Knowing how the signs of a distributor malfunction appear on the VAZ 2109, you will be able to identify them and eliminate them.

Ignition settings

When setting up the ignition, you will need to do the most important thing - install the shafts according to the marks so that the gas distribution functions synchronously with the operation of the piston group. This is the first thing you should do before you start adjusting the ignition. It is worth noting that there should not be any particular difficulties during setup, especially on VAZ 2108-21099 cars. The thing is that the ignition distributor on the engines of these machines can only be installed in one position. Moreover, the ignition switch does not undergo any settings during this procedure, since it does not have any.

The distributor body rotates around its axis to make more precise adjustments. And this turns out to be enough. To accurately set the torque, you can use a simple circuit that uses a simple LED as an indicator. The Hall sensor is disconnected from the system, and positive power is supplied to its negative terminal. An LED is switched on between “+” and the signal LED, and a 2 kOhm resistance is connected in series with it to reduce the voltage. But the plus of the Hall sensor is connected to ground. Now all that remains is to slowly rotate the distributor housing. The moment when the diode lights up will be the desired one.

How to remove and install the distributor on a VAZ 2109

1. Disconnect the wire from the negative terminal of the battery;
2. Completely disconnect all high-voltage wires;
3. Disconnect the throttle valve drive cable;
4. Unscrew all nuts. This is necessary in order to remove the device from the bracket that secures the wires;
5. To maintain the initial ignition timing, make marks on the distributor body and the drive of auxiliary elements;
6. Pull the wires out of the ignition distributor. To do this, use a screwdriver to bend the clamps;
7. Remove the rubber plug located in the crankcase hatch;
8. Start cranking the crankshaft until the piston of the first cylinder is located at TDC;
9. After unscrewing the remaining nuts, remove the distributor;
10. Installation and replacement of equipment on a vase is carried out in the opposite order.

Remember the marks and checking the initial ignition timing.

Required parts and tools

It goes without saying that first you need to purchase a “contactless ignition kit” for the VAZ 2107

When purchasing it, it is very important to know what the engine size is and its brand. Remember this and do not believe unscrupulous sellers who assure you that this data is completely irrelevant

The cost of such a kit ranges from 2-3 thousand rubles.

You will also need a set of high-voltage wires, four spark plugs (they must have DVRM written on them).

The tools you will need are a couple of self-tapping screws, a set of wrenches, drills, and various screwdrivers.

Compression check

After checking the compression, you can breathe a sigh of relief or worry, since the cost of the repair depends on the result.

Impaired compression often causes the presence of oil in the VF, and also causes a number of other problems.

Compression check

To work you will need:

Compressometer;
A rag in oil, which you will use to determine the compression stroke;
Adapter for spark plug holes. It is used when checking the combustion chamber for leaks;
Compressor.

Now let's start checking.

Warm up the engine to operating temperature, then turn off the fuel supply.
In the case of a carburetor, you need to remove the hose, clamp or squeeze it with something, or lower it into a container.
If you have an injector, remove the fuel pump fuse, start the engine and let it run. As soon as the fuel in the fuel rail runs out, it will stall on its own.
Disconnect the ignition system by removing the center wire from the distributor (on the carburetor). The crankshaft position sensor at the injector must be disconnected.
Remove all debris from the spark plug wells so that it does not end up inside the cylinders. Unscrew the spark plugs.
Insert the compression gauge fitting while an assistant starts the engine. The starter should rotate the engine until the pressure gauge needle stops in one position.
By analogy, measurements are carried out on each cylinder, the results are recorded on paper.
To calculate ideal compression, use the formula - 1.2 * Compression ratio.

See your owner's manual for the compression ratio of your engine. Please also note that measurements may have some error.