How to set timing marks for a VAZ-2112 16 valves: photos and videos

Car : VAZ-2112. Asks : Kostikov Vladimir Igorevich. The essence of the question : I can’t fix the timing marks, how can I set the marks on the timing belt?

I have a problem. When replacing the timing belt, the upper pulleys were not fixed, and now it is not clear how to align them. The marks on the pulleys do not “look” in exactly the same direction. Maybe it would be easier to tighten all the pulleys to the TDC position in cylinder 1? If we are talking about 16 valves, I am familiar with setting the marks on the VAZ-2112: I performed this operation on the timing belt 21124. Well, I have a 1.5 engine. Are there any differences?

Timing marks - installation of timing marks using the example of a VAZ 2110, 2111 and 2112 engine

Dear friends, today we will tell you the basics of setting timing marks using the example of a VAZ 16 valve engine.
It's no secret that correctly set timing marks are the key to proper engine operation. If the marks are set incorrectly, then normal engine operation is impossible. It is also important to tension the belt correctly, this greatly affects its durability. So, when do we have to deal with the procedure for setting timing marks? When, according to the regulations, we need to replace the timing belt at the next maintenance, by the way, the rollers are also necessarily changed along with the belt in this case

Also, if our pump is “covered,” the timing belt will have to be removed, since it is this that drives our “water pump.” Well, what if (the worst case scenario) is that our belt broke. Here, if the engine is “plug-in”, then this is a huge nuisance, the pistons meet the valves, and at a minimum, we are guaranteed to remove the cylinder head and replace the valves. So, what are timing marks and where are they applied? The first is the marks on the camshaft pulleys, both on the intake and exhaust:

They must coincide with the mark on the crankshaft, and there are already several methods for calculating this mark. It’s quite difficult to remove the generator belt pulley (it doesn’t allow you to see the mark) and see if the marks match.

With such a coincidence of the piston marks, they are at TDC (Top Dead Center)

The second method is to calculate the DPKV sprocket by the teeth

Setting the piston of the first cylinder to the TDC position

When carrying out work related to removing the camshaft drive belt (timing), the valve timing may be disrupted; to prevent this from happening, the piston of the 1st cylinder is set to the TDC (top dead center) position of the compression stroke. If the valve timing is incorrect, the engine will not be stable or operate properly. Set TDC according to the mark on the camshaft pulley (when installing according to the marks on the flywheel or crankshaft pulley, the piston of either the 1st or 4th cylinder may be in this position). After this, be sure to make sure that the marks on the flywheel or on the crankshaft toothed pulley are aligned (if the generator drive pulley is removed). If the marks on the flywheel or crankshaft pulley do not match, then the valve timing is incorrect (the piston of the 1st cylinder is not installed at TDC). In this case, it is necessary to remove the camshaft drive belt and rotate the crankshaft until the marks align. Important! Rotate the crankshaft exclusively by the pulley mounting bolt (do not rotate the crankshaft by the camshaft pulley itself).

TIP Since it is inconvenient to turn the crankshaft using the bolt that attaches the pulley to it, you can do this in one of two ways

Engage any gear (it is better if it is IV) and slowly move the car until the mark on the camshaft pulley aligns with the mark on the rear cover of the camshaft drive belt.
Engage any gear and lift one front wheel. Next, turn the suspended wheel until the mark on the camshaft pulley aligns with the mark on the rear cover of the camshaft drive belt.

Timing belt price

The price of a VAZ 2110 timing belt, depending on the manufacturer, can vary from 400 to 1000 rubles. The tension roller costs about the same, which is recommended to be changed along with the belt. The cost of replacing these timing drive elements is 600-1000 rubles.

To save money, you can replace the belt and roller yourself. There is nothing complicated in this procedure, and no special tools are required. You just need to purchase spare parts.

The table below shows timing belt models for the 8-valve VAZ 2110 from different manufacturers, indicating their catalog numbers.

TIMING BELT VAZ 2110 (8 VALVES)
AVTOVAZ	2112-1006040
BOSCH	1987949559
CONTI	CT996
CONTITECH	CT 996
GOODYEAR	G1535
GATES	5539
FLENNOR	4428
LUZAR	LTB0112
LYNX	136CL254
PILENGA	CTP0996
OPTIBELT	ZRK1538
TENSION ROLLER
AVTOVAZ	21120-100612000

What are tags and why are they needed?

For the convenience of adjusting the gas distribution phases, each car engine has corresponding ignition marks. They are applied to the drive elements of the gas distribution mechanism.

Installing the ignition according to the marks consists of aligning them correctly. You may ask why is this necessary? The essence of combining the marks is to correctly set the valve timing. If this is not done, the camshaft and crankshaft will rotate asynchronously, which will lead not only to failures in the process of ignition of the mixture, but also to the destruction of the engine itself.

How to set timing marks VAZ-2112 16 valves

A break in the timing belt of the 16-valve VAZ 2112 engine can lead to bending of the valves. The result is an expensive engine overhaul. To prevent this from happening, you need to promptly replace the VAZ 2112 timing belt. Moreover, you can do it yourself.

The belt has a resource - a set service life. If this period has expired, the spare part must be replaced even if it looks normal. After all, a break can happen at any moment.

When asked how many kilometers it is necessary to replace the belt so that the belt does not break, experienced car enthusiasts give different answers. Some believe that after 50–60 thousand kilometers. Others clarify: this replacement period is relevant for an 8v (eight-valve) engine. If a 16v (sixteen-valve) engine is installed, then replacement must be done after 30–45 thousand kilometers.

In the video, a practitioner shows what timing belts look like after a long run and whether advertising should be trusted. Filmed by ExpertR channel.

Selecting a new belt

It is necessary to choose the correct size belt. The length of the product should be 742 mm. An important question for car enthusiasts is which manufacturer is better to choose. Today, high-quality products are produced by both foreign and domestic suppliers:

How to change it yourself?

Before changing the timing belt yourself, you need to study the diagram of the gas distribution mechanism, stock up on the necessary tools, and also imagine the order of work in the form of a sequence of actions.

Before replacing, study the timing diagram. There are differences between modifications of the VAZ 2112, but the basic algorithm is approximately the same for all modifications. This algorithm can also be used on VAZ cars of other modifications, for example, 2110. It is necessary to have a good manual that explains the progress of work step by step. And if you have at least a little experience in car maintenance and minor repairs, we can calmly carry out timing belt maintenance ourselves and change the necessary parts.

Tools and materials

The set of basic tools is small:

socket heads for 10, 15 and 17;
spanner or open-end wrench 17;
large flat screwdriver;
key for the tensioner pulley (if power steering is installed on the car).

The materials required are a new timing belt.

Step-by-step instruction

The work begins by removing the negative terminal of the battery.
Using a 10mm socket, unscrew the six bolts and remove the gas distribution mechanism cover.
The crankshaft sensor chip is disconnected.
The crankshaft sensor mount is unscrewed. Then you need to remove the sensor.
The sensor hole must be aligned with the part of the pulley where there are no teeth. This is done so that the crankshaft sensor can detect TDC (top dead center). In addition, the area without teeth is used to block the pulley. After alignment, you need to put a 12mm hexagon in the hole of the sensor and fix the pulley.
When the pulley is blocked, the generator nut is unscrewed.
The belt tension roller bolt is loosened. After this, the belt is removed. Often during this operation the tension and support rollers and the pump are also changed.
Installing a new timing belt. There are two ways to correctly install this part. First: put on the belt with the tension roller removed. The tension is adjusted after installing the roller. Second: install the belt by turning the exhaust camshaft pulley using a 17mm wrench.
Next, you need to tighten the timing belt using the adjusting bolt. It rotates using a 10 key. Rotation clockwise increases the tension, counter-clockwise weakens it.

Replacing a belt on a car with power steering

If your car has power steering. then the procedure for replacing the timing belt has some differences. Before starting work, it is necessary to remove the power steering reservoir, since it blocks access to the timing belt.

What's the result?

As you can see, the timing belt is an important part of the car, on which the entire operation of the internal combustion engine depends. Like all elements, the timing belt has its own resource, which, as a rule, is limited to 60 thousand kilometers of the vehicle.

If signs of wear are noticeable ahead of schedule, the belt still needs to be replaced. At the same time, the rollers must also be replaced, since jamming can cause a break.

Comparison of chain and belt type gas distribution mechanism drives. Advantages and disadvantages of timing chain, pros and cons of timing belt. Recommendations.

Features and nuances of correct selection of timing belt. When a belt needs to be replaced, the best belt manufacturers know how to avoid buying a fake. Recommendations.

The purpose of the timing belt in the timing belt drive device. Features of operation, how often the drive belt needs to be changed.

When to change the timing belt. Replacing the timing belt, marking it and how to do it correctly. Tips and tricks.

Checking the Priora 16 valve timing belt and replacing the Priora timing belt. How to tighten the timing belt on a Priora, belt selection and replacement. Tips and tricks.

Purpose of timing drive. Advantages and disadvantages of a belt or chain in the design of the engine timing gear drive.

How to set timing marks on a 124 engine

Should the tension be checked on a hot or cold engine?

In conclusion, let’s talk about two more secrets. The first one - as a reminder: on a 16-valve engine, the correct belt tension is obtained only when adjusted while hot. Second: depending on the position of the crankshaft and camshafts, the belt tension changes cyclically from minimum to maximum

Second: depending on the position of the crankshaft and camshafts, the belt tension changes cyclically from minimum to maximum

A little different. Or rather, almost like that, but I don’t know how to explain. In general, under the action of valve springs, camshafts in certain positions tend to rotate in different directions, tensioning or relaxing the belt. But there are situations in which the springs of one cylinder themselves balance the springs of the other - and the RV pulley itself will not rotate anywhere. And this position is close to the TDC position

Or rather, it is 2 teeth away from it (in fact, it depends on the shafts used). 2 teeth is a small thing. One spring has not yet straightened out, and the other has just begun to compress. The force there is minimal, the RV pulley can be turned +/- 5 teeth easily by hand

VIDEO: FEATURES OF REPLACING THE DRIVE BELT OF THE GAS DISTRIBUTION MECHANISM

As you can see, replacing a belt on a VAZ 2107 is not very difficult and can be done even by a novice driver. The power, reliability and efficiency of the car depend on the correct location of the marks and the correct belt tension, so you should show maximum attention and accuracy in your work. Only in this case can you count on the fact that the engine will not fail on a long journey and the car will always return to its home garage under its own power.

Sources

bumper.guru/klassicheskie-modeli-vaz/grm/grm-2107/metki-grm-vaz-2107-inzhektor.html
drive2.ru/c/493560600299831762/
7vaz.ru/jekspluatacija/metki-grm.html

Causes of belt breakage

One of the common problems with the model is the failure of the timing belt. The reasons for this may be different:

Simple wear and tear caused by a long period of use of the vehicle;
Regular increased loads under which the engine has to work intensively;
Mechanical damage as a result of improper operation or received during the repair of other components;
Manufacturing defect.

Regardless of the causes of the problem, it must be eliminated.

Over time, it stretches so much that the gear teeth jump by 1-2 links. This disrupts the valve timing and causes interruptions in engine operation. But this is the best-case scenario for such a situation. The worst is when the strap breaks and the valves bend.

conclusions

As practice shows, setting the ignition on a VAZ-2114 is quite simple, but not every motorist can do it. So, it is necessary to have knowledge of the operation of the engine and its design. Therefore, if a motorist is not able to do this type of repair on his own, he must contact a car service center.

VAZ-2110, also known as the “ten”, is one of the popular and widespread models of the domestic automobile industry in the CIS countries, which has received popular recognition. Its development began in 1983 in the Soviet Union, but the projects became reality in another country, in 1995. This model was produced for 12 years, until 2007, when it was replaced by Lada Priora. But, until now, you can find this model in the vastness of our country, thanks to its cheapness and simplicity, it is still used today.

Belt tension on 8-valve VAZ engines

Before tightening the timing belt on the VAZ, the following preparatory work should be performed:

Hang up and remove the right front wheel;
Unscrew the 3 bolts securing the front timing cover;
Remove the cover;
Use a 17 key to loosen the tension roller.

After this, you should check the drive marks. One of them, located on the crankshaft pulley, must coincide with the installation tab of the rear cover. At the same time, check the mark on the flywheel. It should be flush with the alignment mark on the block boss.

If the marks match, the question of how to tighten the timing belt can be considered resolved. Without removing the belt, it is necessary to move the weakened tension roller to the right so that the necessary tension occurs. After this, the roller is tightened tightly. To adjust the roller, a special “horned” key is used. If it is not available, you can use two Phillips screwdrivers, which are inserted into special holes on the roller.

If the marks do not match, the timing belt on the VAZ-2109 must be removed from the pulleys. After this, the pulleys themselves are individually set according to the marks. It is better to start reinstalling the belt from the rear branch. After installing it, the roller is tightened.

It is necessary to finish tensioning and fixing the belt, and then manually turn the engine 2-3 turns by the crankshaft pulley. To do this, it is convenient to use a “19” head with an extension. The gearbox must be in neutral. If after turning the marks have not moved relative to each other, the procedure can be considered completed. Assembly is carried out in reverse order. » alt=»»> The question of how to check the consistency of the tension should be answered. To do this, hold the strap between your thumb and index finger and turn it 90°. The technician must be able to do this, otherwise the belt is considered over-tensioned.

Replacement

keys for 10, 13, 17;
key for rotating the roller;
flat screwdriver;
wheel wrench;
jack;
a little engine oil to lubricate the tension roller.

1. Place the car on level ground and put it in gear.

2.Using a 10mm wrench, unscrew the bolts securing the timing case.

3. Loosen the generator belt tensioner using a 13mm wrench. Remove the belt.

4. We check the marks on the camshaft gear and the protrusion on the rear cover of the belt housing.

5.If they do not match, you need to turn the crankshaft until they match. This can be done by rotating the front wheel, jacking it up first, or turning the crankshaft with a 17mm wrench using the crankshaft pulley bolt (the gear must be engaged).

Description of the procedure for replacing the timing belt VAZ 2110, (2112) 16 valves

Former flagship of the Russian automobile industry VAZ 2110 with a 1.5 16 valve engine. Scheduled replacement of the timing belt 30,000 km after the last replacement. The autopsy showed that if they had not changed it today, then tomorrow there would have been more work for our mechanic. In general, we recommend that all customers check the condition of the belt at least once every 5,000, or once a year. But knowing the quality of our spare parts, more often is better. On this engine, if the belt breaks, almost all the valves bend. The article is also relevant for VAZ 2112))

We look, remember and don’t let it get to that point.

The patient became five millimeters narrower and generally looked very bad. We send him to the honor board.

And here is the hero of the occasion himself.

We remove the absorber and power steering reservoir so that they do not interfere in the future.

We loosen the bolt by seventeen, the tension roller of the service belt and remove the last one. It will not be possible to remove it completely because the engine mount is in the way. If the belt requires replacement, you will have to unscrew the engine mount.

Remove the tension roller. We unscrew the bolts securing the upper protective cover; they are hexagonal.

Remove the right wheel, plastic mudguard and drain the antifreeze.

We see the crankshaft pulley. Using its bolt, clockwise, rotate the crankshaft until the marks on the camshaft pulleys and the timing belt protective cover match.

Markings on the left exhaust camshaft. The mark on the protective cover is highlighted in red.

Likewise for the intake camshaft. He's on the right. Its pulley has an inner ring for the phase sensor, so it is very difficult to mix up the pulleys.

Remove the crankshaft pulley. Let's lock the crankshaft with the help of a friend. We put him in the car and force him to turn on fifth gear and press the brake all the way. And at this time, with a slight movement of your hand, unscrew the crankshaft pulley bolt. Remove it and the lower protective cover.

We see that the mark on the sprockets and the slot on the ebb of the crankshaft cover coincide.

Loosen the seventeen bolts of the tension and idler pulleys and remove the timing belt. Then the videos themselves. We change them anyway.

We lock and unscrew the camshaft pulleys and remove them. Remember that the right camshaft has a pulley with an inner ring for the phase sensor. The picture should look like this.

We unscrew everything that holds the protective plastic cover and remove the latter. Unscrew the three bolts holding the pump. They are hexagonal.

The pump for a sixteen valve engine is slightly different from the usual for an eight valve engine. It has a small threaded ear for attaching the protective casing.

Lubricate the gasket with a thin layer of sealant and put the pump in place. Tighten the fastening bolts. We put the protective cover in place. We make sure that he sits in his place, otherwise he will rub the belt. If everything is in order, tighten everything that holds it and install the camshaft pulleys and new rollers.

We check that the marks on the camshafts and crankshaft match. We install a new timing belt. If there are no directional arrows, put it so that the inscription is read from left to right.

The right, or descending, branch of the belt should be tight. You can turn the right camshaft clockwise a few degrees, put on the belt and turn it back. In this way we will stretch the descending branch. The tension roller has two holes for a special key. You can find it in any auto store. The issue price is 60 rubles. To tension the timing belt, insert a special key and turn the roller counterclockwise. Since there is a lot of controversy about tensioning the timing belt, we will write this: a tensioned belt should not have a sag between the camshafts of more than 5 mm when pressed and 7 mm on the longest branch (specially experimented). Remember: an overtightened belt reduces the service life of the pump, and an undertightened belt can lead to cylinder head repair. (photo below)

We check all the marks. We turn the crankshaft two turns and check the marks again. If the pistons and valves do not meet and the marks coincide, then accept my congratulations. Then we put everything back in place in the reverse order of removal. Don't forget to tighten the bolts. We tighten the service belt roller with the same wrench as the timing belt tension roller. Fill with antifreeze and start the car. We wish the belt many years of service, but don’t forget to check it periodically; after all, it was made in Russia.

When is it necessary to set the ignition by marks?

Setting the ignition by marks is necessary when replacing:

timing belt (scheduled or after a break);
camshaft gears, pump, tension roller;
crankshaft pulley;
flywheel.

In addition, the ignition is checked and adjusted if problems arise with the timely ignition of the mixture. Most often, such problems are caused by the timing belt stretching or “licking” its teeth. If the belt “jumps” even one tooth relative to the mark, the engine will operate in emergency mode.

What can cause a timing belt to break?

In a VAZ-2112 car with 16 valves, rupture of a belt part can occur due to:

Strong or, on the contrary, weak tension. To make sure it is tensioned correctly, it is recommended to use a special device called a frequency meter. Measurements should only be taken from a cold engine, the indicator should not exceed 155 Hz +/- 3 Hz.
A rupture will be inevitable if the part has been in use for a long time and the replacement was not made in a timely manner. Since there is a constant temperature difference during the working position, the belt element gradually collapses, cracks appear on it, which leads to rupture.
Due to improper placement of the bearing, which can jam and tear the timing belt.
Due to leakage of the oil seal, which coats the part with oil.
Due to a low-quality timing belt, which was installed in the 16-valve VAZ-2112 engine by the manufacturer.

These are the most basic reasons that lead to the rupture of the HMS belt. If you carefully monitor the technical condition of the machine and repair it yourself at the slightest sign of breakdown, you can avoid very unpleasant situations that can happen at any time.

What is ignition timing

Optimal ignition timing is achieved by adjusting its timing. This value is characterized by the angle of rotation of the crankshaft at which voltage is applied to the spark plug before the piston reaches top dead center. Naturally, it cannot be permanent.

In order to determine the required advance angle, it is necessary to take into account the quality of the fuel, since the combustion time of the mixture, as well as the number of engine revolutions, depends on it.

How to change it yourself?

Before replacing, study the timing diagram

There are differences between modifications of the VAZ 2112, but the basic algorithm is approximately the same for all modifications. This algorithm can also be used on VAZ cars of other modifications, for example, 2110. It is necessary to have a good manual that explains the progress of work step by step. And if you have at least a little experience in car maintenance and minor repairs, we can calmly carry out timing belt maintenance ourselves and change the necessary parts.

Tools and materials

The set of basic tools is small:

socket heads for 10, 15 and 17;
spanner or open-end wrench 17;
large flat screwdriver;
key for the tensioner pulley (if power steering is installed on the car).

The materials required are a new timing belt.

Step-by-step instruction

The work begins by removing the negative terminal of the battery.
Using a 10mm socket, unscrew the six bolts and remove the gas distribution mechanism cover.
The crankshaft sensor chip is disconnected.
The crankshaft sensor mount is unscrewed. Then you need to remove the sensor.
The sensor hole must be aligned with the part of the pulley where there are no teeth. This is done so that the crankshaft sensor can detect TDC (top dead center). In addition, the area without teeth is used to block the pulley. After alignment, you need to put a 12mm hexagon in the hole of the sensor and fix the pulley.
When the pulley is blocked, the generator nut is unscrewed.
The belt tension roller bolt is loosened. After this, the belt is removed. Often during this operation the tension and support rollers and the pump are also changed.
Installing a new timing belt. There are two ways to correctly install this part. First: put on the belt with the tension roller removed. The tension is adjusted after installing the roller. Second: install the belt by turning the exhaust camshaft pulley using a 17mm wrench.
Next, you need to tighten the timing belt using the adjusting bolt. It rotates using a 10 key. Rotation clockwise increases the tension, counter-clockwise weakens it.

Replacing a belt on a car with power steering

In addition, cars with power steering do not have an adjusting bolt. The belt is tensioned using a tension roller and a special key. If such a key is not available, you can use a homemade device consisting of two nails and a screwdriver. During operation, it is necessary to check the degree of belt tension and, if necessary, tighten it. Finally, you need to tighten the tension roller nut.

Features of labeling

Before tensioning the belt and tightening the bolts, you need to check the position of the marks. If the marks are set incorrectly, this will, at best, manifest itself in a decrease in engine power and traction characteristics. In the worst case, in those engines where valve bending is possible, it can occur even with a fully functional timing belt.

In order to avoid these problems, it is necessary to follow the order of placing labels:

After installing the timing belt, but before tensioning it, the marks on the crankshaft pulley and the oil pump housing are aligned.
Marks are placed on the intake and exhaust camshaft pulleys.
The belt is tensioned, the tension roller nut is tightened.
The crankshaft rotates two revolutions. If after this check the position of the marks remains the same, you can replace the crankshaft sensor, connect the power connector and replace the timing cover. Replacement of the VAZ 2112 timing belt is completed.

The stages of replacing the timing belt can be seen in the photo below.

Blocking the crankshaft pulley

Placing marks on the crankshaft

Marking valve pulleys

Installation process

First, about what we will need for this:

jack;
screwdrivers with different blades;
hexagons;
socket wrenches;
roller tension wrench;
extension tube.

We install the car in a level position and fix it.
Now you definitely need to turn off the power to the car. To do this, disconnect the left terminal of the battery.
We remove the bolts that secure the belt drive housing.
Disconnect the crankshaft sensor. Now it’s very important: we check the alignment of the marks that are located on the camshaft gears and on the rear surface of the housing.

5. The marks on the flywheel crown must also match. Their combination must be checked. To do this, unscrew the plug located on the crankcase. The flywheel gear is located above it, and the mark is located on it. It should be aligned with the notch on the crankcase. 6. Now we need to loosen the gear tension and check the position of the mark on the crankshaft pulley. Now you can remove the belt. In this case, the flywheel must be fixed. To do this, you need to insert a metal pin between the crankcase and the crown. 7. Now take the 17 key and unscrew the bolt securing the generator pulley. We check the marks placed on the oil pump and crankshaft gear.

8. Take a 15mm wrench and remove the tension roller. We remove the timing belt drive and begin installing a new consumable. 9. First, pull the belt onto the generator pulley. Use a special wrench to turn the tension roller to the right. This is done using a special key. If you don’t have one, then pliers with curved tips will do just fine. Adjust the belt tension. It should be optimal - the belt should not sag, and it should not be overtightened. If you grab the belt with your fingers and can only turn it 90 degrees, then everything is fine. Incorrect tension will certainly lead to premature wear of the belt drive. 10 We assemble all other parts from the reverse. Don't forget to remove the screwdriver that we jammed into the crankcase. 11. Now all that remains is to start the engine and check its operation. If there is no extraneous noise and the engine runs as usual, then everything is fine.

Replacing the timing belt on VAZ 2112 cars 16 valves from A to Z

In what cases is replacement required?

To understand that the timing belt needs to be replaced, you need to visually inspect the element.

It is necessary to stop using it if the following damage is detected:

cracks, cuts have appeared on top of the timing belt, or its base is delaminating;
if the notches located on the inside of the belt are damaged.

The most common reasons why a belt breaks:

the car enthusiast simply does not know how to tighten it properly;
improper operation or use of the belt for longer than the specified period;
contact with the belt surface of coolant, fuel, lubricant;
incorrect operation of the water pump;
play in the belt rollers: tension and support.

If you do not ensure the correct adjustment of the belt, do not inspect and replace the rollers on the VAZ 2112, this can lead to other breakdowns. We will find out which timing belt rollers for the VAZ 2110-2112 16v are better from the author of the video, MegaMeyhem.

If the timing belt breaks, it will disrupt the operation of the entire engine. Then everything descends into chaos: valves and pistons touch each other because their movements are not controlled. As a result of the impact, the valves bend and, touching the pistons, damage their outer walls, scratch the cylinders and important parts of the gas distribution mechanism.

In addition to visual diagnostics of delamination, cracks and other things, it is recommended for a VAZ 2112 car (including the injector) every 50 thousand km. movement to change the belt. Which timing belt for a VAZ is better to choose is described below.

Selection options

In the automotive market you can find several companies that produce high-quality belts. Its length should be 742 mm.

When choosing a belt for 16-valve engines, you can pay attention to:

Factory belt from the Volzhsky Automobile Plant: Lada 21126-1006040. This is a durable belt made from quality material. It is not so expensive that you can spare money.
Lynx 137FL22 – timing belt from a Japanese manufacturer. On its inner side there are 137 serrated cuts. Since it is relatively inexpensive, it will have to be replaced more often than others. This does not mean that the quality of the material is bad. Japanese products have proven themselves well among car enthusiasts.
Belts from Bosch. This company has established itself in the market as the embodiment of quality and sustainability. The belts from the manufacturer turned out to be excellent and, as a result, they are deservedly popular among car enthusiasts. The recommended service life of the straps is fully met.
German ContiTech belt. Manufacturers tried to make the product durable by including polyamide fabric, fiberglass and synthetic rubber.
Optibelt. Belts from this company are also installed on 12-valve engines. They enjoy a good reputation among car enthusiasts due to their large resource. This is because cases of belt “death” are almost never recorded, and it serves its life due to the quality of the materials used.
Gates 5631XS heads the line of the most popular belts, the quality of which is at its best. This is a well-deserved sales leader. Gates belts are made of high-quality material, and therefore the risk of timing belt breakage on a VAZ with a 16-valve engine is reduced to zero.
BRT belts of domestic production. Experts believe that BRT is the Russian analogue of Gates. What is noteworthy is that the quality of a domestic belt is not inferior to a foreign product, but its price is an order of magnitude lower.

After how long to change the timing belt, we find out from the video from the AVTOTEMA TV channel.

Features of labeling

Before installing another timing belt, it is better to set the crankshaft and camshaft to the specified marks from the very beginning. We set the gears to 0 position. Points A, B, C, D, E, F must match as shown in the picture. After this, you need to set the marks on the camshafts and the belt casing in the same position.

How often to change the roller and belt

The recommended replacement rates for VAZ 2114 cars, determined by the manufacturer, define the replacement period as 60 thousand km, but this statement is only true for vehicles under five years old, otherwise this figure should be reduced by approximately 15 thousand km.

The replacement period is also affected by the performance of the liquid pump, with a maximum service life of 90 thousand km. You should not take the original pump under any circumstances, because it will quickly break on its own or “eat” the belt from the outside.

Also, do not forget about the need to replace the crankshaft seals, which also have similar wear measured at 40 thousand.

Broken timing belt

Therefore, taking into account the data described above, we can come to the conclusion that it is necessary to change the belt, adjustment roller and oil seal every 40 thousand km, and after one replacement, install a new pump along with them, if no unforeseen breakdowns have occurred.

Belt faults

Malfunctions of the timing belt can arise as a result of its long-term operation, and can also be the result of incorrect adjustment or malfunctions of the pump or tension roller. These include:

violation of the integrity of the belt (cracks, delamination);
deformation;
belt break.

If any of the specified malfunctions are detected, the belt must be replaced.

Causes of belt breakage

One of the common problems with the model is the failure of the timing belt. The reasons for this may be different:

Simple wear and tear caused by a long period of use of the vehicle;
Regular increased loads under which the engine has to work intensively;
Mechanical damage as a result of improper operation or received during the repair of other components;
Manufacturing defect.

List of damage to the timing belt on the VAZ 2110

Replacing the timing belt of a VAZ 2110 8-valve injector with your own hands is carried out:

As a result of increased tension, the surface begins to become shaggy. Gaps appear.
If the product was loosely tensioned, this leads to cutting off the tooth. In such a situation, replacing the VAZ 2110 8-valve timing belt on a VAZ 2110 is required immediately.
The teeth are largely worn. This is also a consequence of poor tension adjustment.
The surface of the product is covered with small cracks. This happens due to prolonged overheating or hypothermia.
Sometimes the wear area is between the teeth. This is also the result of poor belt tension.
If oil constantly leaks from the engine and gets on the belt, then the product is removed. Then you need to find and fix the leak. The timing belt is replaced with a new one.
On a VAZ 2110 with 8 valves, the timing belt is changed if there was a misalignment during its installation. Its end wear is observed.

When driving the car, you must constantly listen to noises. When it is clearly audible in the engine area, it means you need to stop and tighten the belt.

In some cases, the tooth skips. This problem is indicated by a signal from the sensor. It is necessary to stop and carry out another drive adjustment.

Timing belt life

From time to time you need to inspect the belt and replace it if:

the belt structure began to delaminate;
cracks appeared on the surface;
the teeth that are on the inner surface of the consumable are damaged.

But what could be the reasons that the consumable has reached a state where it is no longer possible to do without replacing it:

the consumable was not properly tensioned initially;
the belt has been used longer than expected;
a lubricant has reached the surface;
the water pump did not work well;
the tension roller had play.

If you do not periodically inspect the belt and do not change it on time, this can ultimately lead to a break. And a break is very serious, since in this case the pistons will collide with the valves. As a result, they will be damaged and the engine part will have to be seriously repaired. A broken belt drive will cause real chaos, as a result of which other timing parts will also suffer serious damage.

The manufacturer promises that you should be interested in the condition of the belt only after 50,000 km. This is not entirely true, because premature wear of consumables can be influenced by a number of factors, such as aggressive driving or weather conditions. Therefore, it is recommended to inspect the belt drive after 20-25,000 km.

Signs by which you can determine the need to replace the VAZ 2110 timing belt

To replace the timing belt on time, you need to monitor the condition of the engine. The timing belt needs to be replaced if:

there are oil leaks on it;
there are many cracks and signs of increased wear on its surface;
timing belt teeth are damaged;
the belt has delaminated, cuts, bulges or folds have appeared;
threads appeared on the surface.

Belt problems

When replacing the timing belt, you should pay attention to the type of damage that caused the belt to fail. Using these symptoms, you can easily identify signs of a malfunction. Let's consider the causes and consequences of untimely replacement, listing the main ones:

If it’s frayed, torn or damaged – it’s almost always due to the reupholstery.
The absence of one of the teeth means weak tension.
A high degree of tooth wear indicates incorrect tension, as does the presence of wear between several teeth or the appearance of abnormal noises.
Cracks – temperature differences beyond the calculated limits.
An oily surface suddenly indicates an oil leak. It is worth replacing the timing belt as soon as possible and finding the leak.
End wear indicates misalignment, angular or parallel.

Do valves bend on a VAZ 2110?

This problem is considered common among some individual VAZ 2110 models.

To understand whether the valve is bent on a VAZ 2110, it is necessary to determine which engine is installed. On certain engines (VAZ 2111, 21114, 21124 engines) there are special grooves on the pistons and when the valves break into the pistons, bending does not occur.

On other VAZ 2110 engines such grooves are not provided. (VAZ 2112) Some car enthusiasts grind such grooves on their own on VAZ cars, but this should be done carefully and in checked places because engine compression may be impaired.

The process of removing the old belt

To understand how to change the timing belt on a VAZ 2110, you need to study the instructions.

Stages of the soft product replacement process:

The wire leading to ground is disconnected from the battery.
The alternator belt is removed.
The piston of number 1 cylinder rises. The front right wheel must be removed. Setting the VAZ 2110 8 valve timing marks is done by turning the crankshaft in the direction of movement clockwise. The marks of the camshaft gear are aligned with a special antenna located on the rear cover of the timing drive.
The bolt on the generator drive pulley is unscrewed and removed. A prerequisite is to lock the crankshaft. This will require at least two people. One is engaged in keeping the crankshaft from possible rotation. The other one, from the clutch housing, removes the plug and unscrews the bolt securing the pulley, which is removed. Immediately there is a check of the coincidence of the marks on the flywheel and the slot in the crankcase.
To loosen the nut securing the tension roller, take a size 17 wrench. With its help, the roller is slightly rotated in order to reduce the belt tension.
The timing drive is being removed.

Injector types

The injector controls fuel injection and can also control the ignition. On all new injection machines, the ignition is set by a computer and adjusted by compiling various firmware. But this was not always the case, and on old cars, the same Japanese ones from the 90s, the ECU only regulates fuel injection, and the ignition timing is set using a distributor and set in the same way as on old models. Lada, but depending on the speed, the ignition timing is adjusted using a more complex vacuum system than the Zhiguli carburetor. Sometimes a pipe breaks during operation and the traction is lost; you will have to look for and correct this defect.

How to evaluate the work already done

Accurate diagnosis is carried out using a computer. However, you can also independently evaluate the correct operation of the circuit.

With the ignition off, check the contacts.
Find the voltage inside the module at terminals C and B.
Check the high voltage cable. To do this, you need to take a candle and put it in the cap. In this case, it should be secured to the cylinder block. If you start the internal combustion engine with the starter, a spark will appear. The check is carried out for all wires. If the spark does not appear, the entire ignition system must be checked or even replaced.
If the engine continues to run poorly, the fuel system needs to be checked.

For the VAZ 2110 carburetor model, markings are also made to adjust the ignition system.

If the ignition of the 8-valve injector of the VAZ 2110 occurs earlier or, conversely, late, then the ergonomics of the entire engine deteriorates. Power is also reduced. The engine is exposed to high temperatures and excessive loads. Among other things, detonation may occur. All this can lead to loss of ignition in the VAZ 2110.

Checking the ignition coil with a multimeter

Checking the voltage at the wire terminal block

Disconnect the block with wires from the ignition coil (on the H4M engine, to access the coils of cylinders 1 and 2, remove the intake pipe).
Turn on the ignition and measure the voltage at terminal 3 of the block (the pin numbering is indicated on the ignition coil).
The output voltage must be at least 12 V. If it is less or less, the battery is discharged, there is a fault in the power circuit, or the engine control unit (ECU) is faulty.
Turn off the ignition.