Reasons why the VAZ 2110 engine has problems with 8 and 16 valve injectors

If the VAZ 2110 8-valve engine, the 8-valve injector begins to show signs of instability in operation, this means that 1 of the cylinders has stopped performing its functions. Such a breakdown should be repaired immediately, because unburned fuel mixture enters the crankcase and changes the viscosity of the oil. As a result, the contacting surfaces of the unit parts are not covered with an oil film of sufficient consistency. There is increased wear of elements.

Causes of unstable engine operation

Content

When a VAZ 2110 engine with an 8-valve injector malfunctions, the reasons are sought in a certain sequence.

Systems and individual components are checked:

electrician;
cylinder operation;
ignition;
degree of depressurization;
air supply;
fuel injectors;
pistons and rings;
sensors

Electrics

When the engine of a VAZ 2110 8-valve injector malfunctions, the reasons, first of all, should be sought in the electrics.
Only after this is it possible to establish unstable operation of the cylinder. First, the candles are inspected:

Using a special key, they are unscrewed sequentially.
A superficial inspection of the insulator is being carried out.
Often the cause of a weak spark or its complete absence is surface deposits, which are eliminated.
Check that the spark plug gap is set correctly.
The cap is inspected for wear.

When the VAZ 2110 engine has trouble with the 8-valve injector, the reasons may lie in the high-voltage wires. To do this, a tester is used that checks them for resistance, the optimal value of which is 5 ohms. If the wires do not meet this specification, they need to be replaced.

There is also a lack of spark due to the following reasons:

ignition coil malfunction;
broken wires.

The spark plug operation is checked in the following sequence:

The spark plug tip is inserted into the wire.
Its opposite end is applied in mass.
The starter turns on.
If a spark jumps, it means the element is working.
If it is missing, the spark plug requires cleaning or replacement.

Cylinder operation

If the VAZ 21108 engine has 8 valve injector valves, then a possible cause may be poor cylinder performance.
When it is determined that everything is in order with the electrical part, the following actions are carried out:

The hood lid is installed in the open position and the VAZ car starts.
To determine the tripping of one of the cylinders, 1 wire is removed one at a time.
Each time you should listen to the tone of the machine's noise. Her work must become unsustainable.
If the next time you remove the wire, the sound does not change, it means that this cylinder has a malfunction.

Knowing that the voltage is coming through the wire, a search is being carried out for another reason why the VAZ 2110 engine is having problems with the 8-valve injector.

Ignition

VAZ 2110 engine 8 valves, the injector may trip if the coil is faulty.
To check, the following steps are carried out:

The terminal is disconnected from the coil.
It has 4 connectors: power, ground and 2 control lines.
A multimeter is connected in series to each connector.
The voltage at 1 connector must correspond to 12 V.
At ground the resistance should be around 1 Ohm.
By connecting the device to the control lines, the starter turns the crankshaft. The device should show at least 0.3 V.

If 1 of these indicators is not met, this will be the reason why the VAZ 2110 8-valve engine has an injector problem.

Depressurization of the system and air leaks

If the VAZ 2110 engine has trouble, the cause of the malfunction may lie in excess air supply.
As a result of depressurization, uncontrolled suction occurs, which leads to disruption of the functioning of the system. To check for a leak, carry out the following steps:

There is a valve next to the air filter that closes.
This leads to an artificial increase in pressure.
It immediately becomes clear where the air leak is coming from.

Insufficient amount of air in the combustible mixture

If there is a lack of air in the combustible mixture, the VAZ 2110 8-valve engine and 8-valve injector may also begin to stall.
The following problems exist:

The capacity of the air filter has deteriorated. This happens due to its contamination. To check the unit, dismantle it and start the car. If no changes are observed, then this unit requires replacement.
Another reason why the VAZ 2110 8 valve injector troits is the throttle. This element needs constant monitoring. During maintenance, in parallel with changing the oil and all filters, this part must be cleaned. For this purpose, VD-40 is used, which removes dirt well from the surface.

Fuel injectors

VAZ 2110 engine 8 valves, the injector may triple due to a malfunction of the injectors, as well as the fuel rail.
To understand how faulty the injectors are, a stand is used that provides complete information about them. In some cases, they need cleaning, which is also carried out at the stand. The ramp is also subjected to external examination for cracks or dents.

Pistons and rings

A malfunction in the piston system often leads to the fact that the VAZ 2110 engine begins to misfire.
It depends on the mileage traveled by the car. Unstable operation occurs for the following reasons:

There is wear on the rings and pistons. Not only is there an increased consumption of lubricant, but the operation of the unit also deviates from the norm. In this case, you should hurry up with a major overhaul.
Piston burnout. This happens because the rings allow oil to pass through, which burns in the piston. This leads to their burning out.
When the valves burn, the gap increases. As a result, exhaust gases begin to flow, and the car's performance deteriorates.

These reasons lead to a decrease in compression. It is checked by adding oil to the cylinder. If its performance has increased, then the piston group requires replacement.

Sensors

If sensors fail, this affects the unstable operation of the car. This is due to the fact that the nodes send a signal to the electronic unit. If it is absent, the receipt of commands to control the machine stops.

To identify a malfunction, each sensor is checked individually until the faulty element is found.

What to do if the engine on a VAZ 2110 has problems

The engine is the main and most complex component of any car.
If you do not monitor its condition, do not carry out preventive maintenance, or timely repair of engine components, various malfunctions will arise over time. Almost the most common problem with engines, including VAZ 2110 engines, is tripling.

Engine 10ki

Symptoms of a problem

If you know about the main signs and symptoms of a motor malfunction leading to tripling, it will be much easier for you to solve the problems that arise.

There are several signs in total.

The engine runs rough at idle, shaking and vibrations occur, which are clearly felt inside the cabin. This phenomenon cannot be confused with anything and the verdict is clear - one of the cylinders has failed. This symptom appears even when the unit is broken.
Blackening of the electrode for spark plugs, presence of soot and soot. It is not enough to simply replace the spark plugs with new ones, since this does not eliminate the cause of soot formation.
The exhaust changes its sounds. When tripping, the exhaust sound literally shakes the car. Experienced drivers notice this quickly and easily.
The appetite of the power unit is noticeably growing. There can be many reasons for increased consumption, so a full diagnosis will be required.
Dynamic performance decreases, speed and power drop. At low speeds it is not difficult to notice when picking up speed. But this can be caused by cylinder failure, that is, tripping, or other reasons.
The revolutions are floating. This is easy to notice by looking at the tachometer needle. Changes, that is, fluctuations, can be serious or minor, in the range of 100 revolutions.
When accelerating, you can feel the engine jerking in any gear.

To understand why the engine stalls at idle or in gear, you need to understand the possible reasons for this phenomenon.

Causes

The reasons for engine tripping are different. But they are most often caused due to the failure of one of the following units:

Ignition system;
Candles;
High voltage wires;
Vacuum booster;
Air filter;
Distributor;
Incorrect adjustment or burnout of valves;
Piston rings.

Now let’s take a closer look at the reasons and actions you can take in a given situation.

The revolutions are floating

Cause

Your actions

The ignition was set incorrectly

It’s not uncommon for an engine to misfire because the ignition was set incorrectly. The problem is determined by skipping a beat, the appearance of popping noises, and bouncing of the engine. Listen to how the motor works. If the tripping occurs at idle, but when you start driving and increase the speed, the problem goes away, then the ignition is too early. It needs to be adjusted.

Vacuum booster problem

It may be damaged, the tightness of the diaphragm or valve may be compromised. This leads to the appearance of air inside the system, the mixture becomes “leaner” and does not ignite properly. As soon as there are literally 2 omissions, the candle will get wet and will not be able to work. If there are problems with the amplifier, the engine will fluctuate at idle, when the engine is hot and cold

Another common problem is engine tripping, accounting for about 50 percent of all cases. To solve the problem, periodically inspect the spark plugs, clean them and change them. Moreover, it is recommended to perform the replacement as a complete set, and not just each candle individually

If breakdowns occur in one of the high-voltage circuits, the spark will not be able to reach its spark plug. As a result, the motor stalls and does not work properly. To check, turn off the lights, start the engine and watch the area from the distribution coil to the spark plugs. If a spark appears in the gap, this indicates the presence of a hole in the capacitor or wire insulation. A temporary solution is electrical tape, but then the wire must be replaced

If the air filter becomes clogged and dirty, the engine will simply suffocate due to lack of oxygen. This situation is relevant for those who, when changing the oil, ignore the recommendation about the need to simultaneously replace the air filter. As a result, the spark plugs are flooded, the mixture becomes lean, and the engine suffers. Just change the filter and the problem will go away

Piston rings rarely become deformed, but this situation cannot be ruled out. To make sure everything is fine with this unit, perform a compression test. If the compression level in one of the cylinders is too low, try adding a little oil to it. If the problem goes away, then the reason is definitely in the rings. They need to be replaced

If valve clearances are violated, the entire system suffers. Because of this, periodically one of the cylinders cannot receive the required amount of air-fuel mixture. With such a malfunction, the engine will misfire at idle, when the engine is hot, when the engine is cold, and when driving. To fix the problem, you need to remove the cylinder head and adjust the valves in accordance with the instruction manual for your VAZ 2110 with the engine installed on the car. Different engines have their own nuances

Not very often, but the distributor also sometimes causes the engine to trip. This assembly has three weak points - the turntable bearings, shafts and bushings. Over time and as the vehicle is used, they wear out. Therefore, if the culprit is the distributor, try replacing it completely or carry out partial repairs with a repair kit, replacing worn elements

Burnt out pistons or valves

A problem we don't want anyone to face. This is a serious engine failure that will require a complete repair of the power unit. The main difficulty is the need to disassemble the engine and visually inspect the pistons and valves. Carry out such a check only if all previous measures did not produce results and did not allow you to identify the culprit

Checking pistons and valves for burnout can only be carried out by a specialist with sufficient experience. It is not recommended for beginners to carry out such activities on their own.

Engine trouble is a simple symptom that can appear as a result of all sorts of breakdowns and defects in your engine. Therefore, your task is to find the cause of the tripping and promptly eliminate it. If you delay repairs, the consequences can be catastrophic for your car and budget.

Reasons for engine tripping 16 valve injector

If the VAZ 2110 engine has problems with the 16 valve injector, then the reasons have some features:

High voltage coils. Their quantity is 4 pcs. They are located under the lid. It is removed during inspection. To establish the serviceability of each coil individually, the bolt located next to each element is unscrewed. Then the car starts and the terminal is removed. If the noise of the machine does not change, then the unit is faulty. Each coil is checked this way.
Faulty sensors located on the crankshaft or camshaft lead to vehicle malfunction.

Nutrition

Often, the cause of engine tripping is the power supply system. First of all, the problem may be caused by low-quality fuel. To check, try changing the fuel. You can also try cleaning the injectors.

Their blockage can also cause tripping. For this purpose, special compounds are used. It is not recommended to pour cleaners into the tank. It is better to make a temporary power supply system; cleaning is carried out according to the instructions indicated on the package. After cleaning the injectors this way, the spark plugs should be replaced with new ones.

Causes of carburetor engine tripping

If the engine of a VAZ 2110 8-valve carburetor fails, then the reasons are as follows:

Setting the quantity and quality of the mixture. The carburetor has mixture quantity and quality screws that need to be adjusted.
If the engine of a VAZ 2110 fails, the reasons lie in clogged jets and idle channels.
The gasket that allows air to pass through is broken. This makes the combustible mixture leaner.
When the VAZ 2110 engine stalls, the cause may be a malfunction of the carburetor magnetic valve.
The float system is not adjusted correctly. As a result, the fuel level decreases. This leads to the fact that the engine on the VAZ 2110 8 valves will operate unstably.
The filters that allow gasoline to pass through are clogged.
The ignition system distributor is malfunctioning.

If the engine in a VAZ fails, then you should start by checking the spark plugs. Most often the reason is their contamination. If this does not bring results, then you need to start looking for more serious reasons.

Ignition

Before checking the entire system, it is necessary to identify the inoperative cylinder. This is done as follows: the high-voltage wires are pulled off the spark plugs one by one.

At the same time, the working cylinders react to this action, the engine begins to wither. If the non-working cylinder is disconnected from the ignition, the engine will not react to this in any way. After determining the inoperative cylinder, unscrew the spark plug. Problems with it or with the ignition system are indicated by the presence of fuel residues on it, the spark plug is “wet”. You can try replacing the spark plug and installing another high voltage. You may find that when you start the engine, it runs fine. If this does not happen, you need to continue checking. The simplest solution is to replace your module with one that is known to work. If this is the problem, then the engine should start working correctly. Also possible. To do this, you need to measure the resistance at the terminals. This needs to be done in pairs. Combine cylinders 1 and 4, as well as cylinders 2 and 3. The resistance should be between 5.2 and 5.5 ohms. The ignition module cannot be repaired; if it malfunctions, it will have to be replaced.

Problems with the injection system

There are some specific problems with the injection system that can become

VAZ 2110 troits engine

The cause of tripping or similar problems with the VAZ 2110 engine:

malfunction of the idle speed controller;
clogging of injector nozzles;
contamination of the fuel pump, fuel or air filter;
failure of the mass air flow sensor;
throttle position sensor failure;
contamination of the engine crankcase ventilation system;
ECU malfunction.

When a VAZ 2110 stalls when cold, but after warming up it works fine

Separately, it is worth mentioning the problem with the sensors that are equipped with the “tens” motors. Although they are inexpensive, as practice shows, they need to be replaced quite often. First of all, this is the notorious mass air flow sensor (MAF). Next to it, the throttle position sensor (TPS) falls into the risk group. It is also necessary to mention the idle speed controller (IAC), it is also popularly called the “idle speed sensor”. All of them, unfortunately, require systematic diagnostic testing.

VAZ 2110 troits engine

Along with this, the “crooked” firmware of the electronic control unit may prevent the engine from idling correctly. Such a problem may arise, say, after the car has been subjected to unreasonable tuning. As a result, good dynamics are observed at high speeds, but then the VAZ 2110 troits when cold and no longer holds the standard 1000 rpm at idle and even stalls. This problem can be solved by flashing the ECU in accordance with the version of the program recommended by the automaker. However, sometimes diagnostics also reveal defective ECUs, which reconfiguration does not help. In this case, it may be necessary to replace the control unit with a new one.

Additionally, when the engine injector of a VAZ 2110 fails, it makes sense to check the intake manifold for leaks. In this case, gaskets, vacuum hoses, and injector O-rings are checked. You also need to inspect the vacuum brake booster and manifold plugs. As a result of suction, excess air appears in the intake manifold, which leads to an over-lean mixture and misfire in the cylinder. This may cause the candle to become wet, which means it may lose its ability to ignite the compressed mixture. At the same time, it will not be difficult to detect the help at a service station, since specialists use a smoke generator. Likewise, it is important to check the fuel pressure at the rail.

Crankshaft position sensor (CPS)

Often the engine stalls due to problems with the DPKV. To check, you will have to remove this sensor from the engine. Be sure to mark its position on the engine.

After removal, you need to measure the resistance of the sensor inductive coil. The multimeter should show a resistance between 550 and 750 ohms. Anything more or less indicates a sensor malfunction. It needs to be replaced. There are other testing methods, but they are “difficult to apply” in a regular garage.

Now a short video with another reason.

Solution methods

Now that the main causes have been identified, you can proceed directly to troubleshooting methods . Before we begin, it is worth noting that not all faults can be identified independently, much less eliminated. Let's look at what needs to be done to eliminate engine tripping.

Fuel rail and injectors

The most common cause of engine tripping is a malfunction of the injectors and fuel rail. To eliminate the cause, it is necessary to disassemble this element. The fuel rail is inspected for cracks and deformations. But with candles, not everything is as simple as it seems at first glance.

To determine the performance of the elements, they need to be run through a special stand, which will show whether the injector will work. If they become clogged, they must be cleaned at a nozzle cleaning stand, and if the element is completely faulty, then replace it with a new one.

Spark plugs and wires

Another reason why the power unit fails is the spark plugs and high-voltage wires. So, it is worth removing the elements from the engine and conducting diagnostics. Spark plugs, first of all, are inspected for integrity, and then checked on a special spark plug stand. If everything is in order with the spark plugs, then it is necessary to set the contact gap before installation.

High-voltage wires are checked with a conventional resistance tester. So, a good quality wire will have a resistance of 5 ohms. Deviation from this indicator is considered to indicate that the wires are not suitable for further use and must be replaced with new ones.

Sensors

Failure of several sensors can lead to the motor becoming unstable and tripping. This could be a failure of the TPS, IAC, camshaft sensor, or DMVR. When all these components fail, they signal the electronic engine control unit, which in turn outputs information to the driver. The malfunction can be eliminated by replacing the corresponding sensor.

There are two ways to determine the performance of the sensor - measuring each sensor one by one with a tester, or connecting to the on-board computer, where an error will pop up, decoding which you can determine the location of the problem.

Throttle valve

A faulty throttle valve can cause the engine to shake. To cure the malfunction, you need to dismantle the element and clean it. Today, there are a sufficient number of products on the auto chemical market that can be used to clean this unit.

But the most popular folk method remains carburetor cleaner, or VD-40. Both products clean out accumulated dirt and dust quite well.

Air filter

The air filter remains a known problem with engine tripping. Thus, untimely replacement of this element can lead to insufficient or incorrect formation of the air-fuel mixture. This is due to the fact that a dirty filter leads to poor air permeability and the engine simply begins to choke.

To eliminate the problem, it will be enough to replace the air filter element. Since the VAZ engine has simple design features, any motorist can cope with this task without much difficulty. So, to replace the air filter you need to get into the engine compartment. Then, unscrew the four bolts securing the air filter cover and change the filter element.

Air supply problems

Air supply is an integral element of the formation of the air-fuel mixture. So, due to the wrong amount of air, the engine runs hot. The main elements that affect this are the throttle valve and the air filter.

A dirty throttle body will not allow proper air flow. As a result, the throttle may get stuck in one position, and the engine will stop functioning normally. To correct the situation, it is necessary to remove the part from the engine, then clean the element and make sure that the valve is working. It is worth noting that cleaning can be carried out with special means, but carburetor cleaning liquid is also ideal.

Particular attention should be paid to the mesh of the mass air flow sensor. It regulates the position of the throttle valve. If dust has accumulated on it, then the recognition of the amount of air that goes into the engine is impaired. Accordingly, much more oxygen can enter the power plant than is required. This causes an imbalance in the mixture. Therefore, when cleaning the throttle valve, it is necessary to pay attention to the sensor grid and also clean it.

The air filter must be changed every 20,000 km. If this is not done, the engine begins to feel a lack of air, and in addition to tripping, a number of other malfunctions occur. The way out of the situation is to replace the element. This will help normalize the amount of air supplied to the cylinders and restore the balance of the air-fuel mixture.

Conclusion

The main reason for the power unit tripping is a faulty spark plug. The selection of this component for the car must always be done. This will help you configure and adjust the unit correctly. Also, the fundamental reasons for tripping is the lack of the proper amount of air and fuel, which upsets the balance of the air-fuel mixture.