The new timing chain of the VAZ 2107 rattles. The timing chain knocks (rattles), cold or hot. How to determine whether it is possible to ride. Automatic tensioner system

Signs of stretching

The symptoms of this problem are specific. And it will be very difficult to confuse them with something else. So, the main signs of a stretched gas distribution element chain are:

Increased engine noise. Yes, the chain itself is very noisy. But in this case, the sound will be accompanied by a characteristic clattering sound, even at idle speed. As you press the pedal, the clunking sound will increase in intensity.
Unstable engine speed. Since we now have shifted valve timing, the engine will adjust. Excessive vibrations occur and are transmitted to the body.

In some cases, the damper breaks. In this case, only replacing it will help. How to tension a chain on a VAZ-2107 (injector)? Photos of the process are in our article.

By the way, on a VAZ-2107 with a carburetor power system, unlike injection engines, to turn the crankshaft it is enough to turn the ratchet. But let’s not get ahead of ourselves and consider several ways to tighten the motor chain on a VAZ-2107.

Automatic tensioner system

Automatic tensioner

Some car owners of classic VAZs replace the standard chain tensioner with an automatic one of the “Pilot” type. The automatic tensioner does not require maintenance after installation and, without the intervention of a technician, ensures that the chain is tightened as it stretches. The advantages of the Pilot device include:

no need to supply an oil line, which eliminates chafing of the VAZ 2107 injector timing chain and loss of oil pressure;
the absence of plunger elements, which is why the automatic chain tensioner “Pilot” does not jam;
the movement step is 1 mm, which allows you to regularly monitor the degree of tension;
no shoe wear;
reduction of motor noise;
increasing the service life of all timing components;
long service life - about 25 years.

The “Pilot” chain tensioner improves the performance of the VAZ 2107 injector engine due to the precise execution of valve timing. The process associated with how to tension the chain is carried out regardless of the operation of the car engine.

How to tension a chain on a VAZ-2107 without removing the valve covers?

First we need to place the car on a flat surface and secure it with anti-roll bars. Next, fix the gearshift lever in the neutral position. Then remove the drive cover. Once access to the chain is free, the tensioner should be slightly loosened. It is located next to the water pump. Next, using a 36-degree socket, rotate the crankshaft 360 degrees. After this, tighten the tensioner to the maximum. We start the engine and check the tension level. The clatter must disappear.

Adjusting the chain on VAZ 2101-VAZ 2107

Welcome! Sometimes adjusting the chain tension of “Gas Distribution Mechanisms” is currently an integral part of cars of the “classic” family. The chain, or rather its tension, is adjusted using two things: using the crankshaft bolt, and also using a chain tensioner. When the chain on a car becomes loose, a characteristic knocking sound appears in the area where the chain is located, which is very clearly audible at idle.

Note! To adjust, you will need the following tools: firstly, a spanner wrench will be useful, and secondly, you will need a special wrench for turning the crankshaft bolt. (If you don’t have a special key, then you can use a 36 socket)

Summary:

When do you need to adjust the chain on a VAZ 2101-VAZ 2107? 1) If the chain is loose and dangling. 2) If, when you press the gas pedal sharply or when you release it, a rattling noise occurs in the engine.

Tightening the chain while removing the valve covers

If the chain is still noisy, perform the following operation. Using keys, we remove not only the drive, but also the valve cover from the cylinder head side. In this case, the chain tension can be checked manually as the camshaft sprocket is released.

So, loosen the tensioner a little and turn the crankshaft two turns. After this, fully tighten the timing chain tensioner. Next, we check the element manually. There should be no sagging. The chain must be elastic. If so, replace the valve cover and drive cover.

Adjustment Details

Sometimes the process of adjusting the tension level may be required several times. Therefore, let us consider in detail how this procedure is performed. After the cover has been removed, it is necessary to relieve the pressure in the tensioner. To do this, unscrew the corresponding lock nut.

As soon as it loosens, the tensioner shoe will make a characteristic click. If this does not happen, and the locknut is almost unscrewed, you need to knock on the tensioner. Sometimes the plunger gets stuck in it. Try not to damage this element and strike gently through the rubber layer. As a result of the operations performed, the element should snap off.

How to tension a chain on a VAZ-2107? Use a large wrench to turn the crankshaft. It should stop at the point of greatest resistance. Just turn it a couple of turns. Using a wrench, fix the shaft in this position and tighten the cap nut. How to further tighten the chain on the VAZ-2107 with your own hands?

We connect the tensioner and check how secure it is. If the chain is elastic, install all the elements in place and start the engine. When checking the operation of the timing drive, there should be no extraneous noise, which will increase with increasing crankshaft speed.

Why is this so important to do?

During operation, the chain is subjected to significant loads. After all, it interacts with two shafts - the crankshaft and the camshaft. Over time, the part stretches out. The chain pitch changes and the engine begins to operate unstably. As a result, the revolutions fluctuate, and the mechanism itself jumps one or more teeth. If the circuit begins to make noise, this is the first sign for diagnosis.

The tensioner may have failed. But in most cases, simple adjustments save the day.

Procedure for tensioning or replacing the timing chain

As the vehicle operates, the timing chain, which operates under high voltages, is gradually stretched. Because of this, the chain pitch may change and the engine begins to operate unstably at idle. Floating speeds appear. It is even possible for the chain to jump several links and then the internal combustion engine will begin to stall. To prevent this, experts recommend periodically adjusting the chain tension. If the driver heard that the VAZ 2107 chain is rattling, this is a sure sign that on the VAZ 2107 chain tension is simply necessary.

Before you begin troubleshooting, you must make sure that the chain, sprockets and other drive elements have no mechanical damage and can continue to be used. To do this, simply remove the drive cover and perform an external inspection of the parts.

How to tension a chain on a VAZ 2107 - this can be done in several ways. Car enthusiasts choose any of them based on experience and time available for work.

To begin with, you need to place the car on level ground and secure the wheels with chocks so that it does not move, and also set the gearshift knob to the “neutral” position. Before starting work, you need to prepare a tool - a wrench for “13” and “36”, sockets for “8” and “10”, pliers and a screwdriver. To gain access to the chain, you need to remove the drive cover by unscrewing the bolts holding it in place.

We tighten the timing chain on the VAZ 2107:

When is stretching necessary?

Chain tensioning is required in the following cases:

after engine repair;
after replacing the product;
when stretched after prolonged use.

In the first two cases, it is clear that a tension check is necessary because the chain was removed or replaced. In addition, you should also check that the alignment marks match. These marks are located on the crankshaft and camshaft. You can determine the need for tension by the sounds of the engine running. If the tension is weak, then during its operation extraneous noises are heard in the place where the chain drive is located. At the same time, timing parts wear out faster. Therefore, when checking the tension, it is necessary to pay attention to the condition of the damper and the shoe.

Timing tensioner shoe

If the tension is weak, the links can jump several teeth, then the valve timing will be disrupted. In this case, the car may stall, not start, and the speed will fluctuate. You can use a flathead screwdriver to check. It needs to be inserted and, using as a lever, pressed on the chain. It should not bend and be stretched like an arrow. Do not put too much pressure on the drive, although the part is metal, it is subject to deformation.

The video below looks at a VAZ 2101 car, in which a clattering sound is heard when the engine is running. It shows in detail how to check the condition of the damper, the shoe, and how to carry out tension.

Features of self-removal of the defect that has arisen

When replacing the hydraulic chain tensioner and installing a mechanical tensioner on a Chevrolet, the valve cover must be removed.

Next, after pulling out the pin, you need to use a ratchet wrench to make one full revolution of the crankshaft. It is important to pay attention to whether the slack chain on the Niva has come out of the grooves of the tensioner shoe and damper. If this point is ignored and the defect is not eliminated, then the consequences can be sad (but this only applies to a single-row chain).

Also, as a result of the first revolution, the primary slack of the chain on the Niva is selected and, as a rule, the rod immediately comes out one or two more clicks, relative to the first shooting. After self-replacement, subsequently no extraneous sounds will be observed during startup on the Chevrolet Niva. The engine will always run smoothly.

By the way, practice shows that sometimes you don’t have to resort to replacing the unit described above on a Chevrolet, but simply get by with just changing the oil. Many auto mechanics advise using semi-synthetic oil rather than synthetic oil.

When the hydraulic tensioner is replaced, nothing will rattle when you start the engine. Since it is always only the faulty element that rattles. The instructions for replacing this unit yourself prove that the procedure is not at all complicated, and in addition, the price of the issue is no more than 2,000 rubles. But there is one “but” - if the Niva Chevrolet car is relatively new and was under warranty, it will automatically be canceled.

This article will be of interest to many car owners who have a timing chain drive. The bottom line is that sooner or later, under the head cover, a “knock”, “clanging”, in general, something rattles there. This is really stressful! After all, there is definitely a problem with the chain or its tensioner; if you mess it up, you can end up with a very major repair. On the other hand, owners for whom nothing has happened yet, the engine is working properly, want to know what kind of noise it is? It is DESIRABLE to hear it, both for yourself and on video. That's all about today's article...

I have already written and said many times - that if the connecting mechanism breaks, usually this, then you can end up with a very large repair. In special cases, it is easier to buy a contract engine than to repair this one! If you don't believe me, let's touch on this topic a little.

Step-by-step instruction

Before starting troubleshooting, check that all timing components are free of mechanical defects. To do this, you need to remove the protective cover of the drive and perform a visual inspection of the parts: sprockets, damper, tensioner and shoe. If defects are found, these components should be replaced.

Tools

Before you start work, you need to prepare the necessary tools:

keys to “13” and “38”;
flat screwdriver;
pliers.

To carry out work, the car should be placed on a convenient platform and supports should be placed under the wheels so that it does not roll. The gear shift lever must be set to neutral.

Engine compartment of VAZ 2101

Stages

First you need to find the tensioning device; it is located under the pipes near the pump. Use the key to “13” to release the tensioner. Once the chain is loosened, the shoe should pop off.
Next, you should take the key at “38” and throw it on the crankshaft pulley nut. Then you need to turn the crankshaft a couple of turns in a clockwise direction.
Rotate the shaft until the marks on the camshaft sprocket and on the camshaft bearing housing coincide. In this case, the spring located inside the tensioning device, acting on the shoe, will automatically perform the necessary tension.
It is advisable to additionally check the tension using a screwdriver. If everything is normal, then we return to the tensioner and tighten its head with a wrench.

After tightening the chain drive, you should start the engine and check its operation. It should work without extraneous noise. If the noise remains after tensioning, then the reason may be in the damper. Then you need to check its serviceability and replace it if necessary. It may not be possible to tension the chain drive the first time, so this procedure will have to be repeated several times.

The camshaft drive mechanism on the “six” operates using a chain-type transmission. However, the device is imperfect and requires periodic tightening. The required degree of tension is achieved with the help of a tensioner, which, with its front protrusion, rests against the VAZ 2106 chain tensioner shoe, which creates the necessary conditions for this.

You need to know that the chain tensioner is a component of the gas distribution mechanism of a car, which is constantly exposed to friction, which negatively affects the degree of wear of the associated parts. As a result, such a VAZ 2106 timing chain tensioner should be made only from high-quality materials, which are used mainly in factory production.

Of course, the price of the “six” chain tensioner, which is used during factory assembly, is slightly higher than analogues offered for sale by auto parts stores, but you should know that here the experiment with replacing the part with a cheaper one is very dangerous, and calls into question the reliability of the gas distribution mechanism in in general.

The VAZ 2106 chain tensioner device can be viewed below:

At the same time, you can see how the chain tensioner shoe and other components of this unit work. If the product cannot provide the correct tension of the chain drive when changing the position of the cap-shaped nut or does not function as a chain clamp in a tensioned position, it must be repaired, and if this is not possible, replaced.

Timing drive device for VAZ 2107

The timing belt on an injection engine consists of:

an intake pipe and an exhaust manifold, which perform the functions of supplying hydraulic structures to the cylinders and removing exhaust gases;
crankshaft - it is necessary to activate the timing drive;
The camshaft is the main timing element, which, when rotated, regulates the operation of valves with certain phases;
valves, rocker arms, rods and pushers - they interact with the camshaft in a certain mode necessary for optimal engine operation;
timing chain drive - through a chain stretched over the gears and sprockets of the crankshaft, auxiliary units and camshaft, it drives the entire timing mechanism, as well as the oil pump and ignition distributor sensor.

Diagram of the camshaft drive mechanism and auxiliary parts of VAZ 2101 to 2107

The timing drive (also called the camshaft drive) on the VAZ 2107 is not very complicated structurally, but there are a number of nuances that must be taken into account when replacing or tensioning the VAZ 2107 chain. This engine timing element includes:

The crankshaft sprocket, which is the drive sprocket, rotates at twice the speed of the camshaft sprocket, so it has a smaller diameter;
Drive sprocket for the oil system pump and sensor;
Camshaft sprocket;
The calmer is made of plastic;
A hydraulic tensioner, to which engine oil is supplied as a working fluid through a special tube through an oil sensor;
Chain tensioner shoe;
Bush-roller chain, for engines 2101-21011 it has 114 links, for engines 2103-2106 - 116.

Determining how many links there are in a chain is quite simple. It is necessary to stretch the chain to its entire length and if the links are the same at both ends, then there are 116 of them, if they are different, then there are 114 links.

There is a mark on the crankshaft sprocket; when installing or adjusting the chain, it should “look” at a special mark in the form of a boss on the cylinder block. The special mark on the camshaft sprocket should be located opposite the influx mark on the bearing housing. As a result, the crankshaft and camshaft marks should be directed towards each other.

Typical chain tensioner defects

Such malfunctions include:

A collet-type clamp is not able to fix the product rod, which interferes with adjustment work on the correct tension of the chain drive.
Wear of the main spring element (looks like this: the spring element is deformed in one plane, which becomes noticeable after dismantling the chain tensioner, which shines on one side).
Damper spring failure.
Limit wear of the product rod at the point where the collet-type clamp is attached.
Defects in threaded connections on the installation fasteners (studs) of the product.

Automatic chain tensioner

Recently, as an alternative, an automatic chain tensioner has been used in the gas distribution mechanisms of such vehicles, which operates according to the following principle. The hydraulics of the system operate under the pressure of the motor lubrication and help to maintain the required tension mode of the chain drives in the required position, at which the need to manually install the VAZ 2106 chain tensioner practically disappears.

In the body of the chain tensioner, the price of which is slightly more expensive, there is an oil hole, coaxially located with the analogue in the power plant block. In the internal cavity of the body part of the product there is an adapter device with a ball, which is under high pressure, regulated by a pressure-reducing valve. Using a threaded plunger device, the automatic chain tensioner is able to control the functionality of the drive chain in any situation, even when the engine is turned off.

Timing chain tension for VAZ 2106

One of the main reasons for the occurrence of malfunctions in the tensioner unit is considered to be the characteristic knock of the chain drive from the front section of the over-valve casing, where the VAZ 2106 chain tensioner sprocket is located, mounted on the camshaft axis. Creating a certain degree of tension in the chain drive and then installing the chain tensioner is not very difficult, even for a novice car enthusiast. So:

Remove the air purification filter element with the housing and the over-valve casing.
We begin this type of repair of the chain tensioner, for which we unscrew the tensioner not completely, video instructions for dismantling which are on the Internet.
Using the starter handle or another method, we make 2-3 circular rotations of the crankshaft, after which the chain drive is engaged.
We check the tension of the chain drive by pressing on its links.
If the timing chain has received sufficient tension, you need to tighten the timing chain tensioner tightly and reassemble the attachment in the reverse order.

Replacing the chain tensioner

To replace the chain tensioner, you need a set of wrenches. Replacement procedure:

We unscrew the 2 fasteners of the “six” chain tensioner to the power unit unit and dismantle the device. A paronite gasket is inserted between the product fastening flange and the motor block. This is a very soft, oil-resistant material; when dismantling, you need to carefully remove it without deformation.
Having installed the product to be dismantled in a bench vice, you need to apply some effort to unscrew the cap-shaped nut. The technical condition of the collet type clamp, which is located in the removed cap. If the claw of this clamp does not work, it is necessary to install a new nut or change the entire device.
Before installing the product, it must be prepared for installation. For this purpose, it is necessary to install the plunger into the product body in a recessed position and, holding it, tighten the fastener in the form of a cap.

After installing the chain tensioner on the cylinder head, it is necessary to “discharge” the product, which requires turning the crankshaft of the power plant clockwise. This action will tighten the chain drive, after which you must first unscrew and then tighten the cap nut.

Chain that needs tightening

It is necessary to tighten the chain on a VAZ 2107 in the following cases:

during long-term use of the car,
when a metallic ringing appears in the front part of the engine,
after repairs, which included removing the VAZ 2107 timing chain and other elements of this system,
before adjusting the valve clearance,
after the timing chain tensioner or tensioner has been replaced.

Is it possible to drive?

In short - NO NO! We immediately go to the service station and look for the causes of this malfunction. Of course, if the chain rattles for a short period of time, you have a few days, maybe even weeks. But again, I wouldn't wait. All this can end very badly!

The VAZ 2107 has an overhead valve gas distribution mechanism. This means that the camshaft is located at the top of the engine, in the cylinder head. The timing belt is designed to regulate the supply of gas-fuel mixture to the cylinders and organize the removal of exhaust gases. To operate the timing gear, a sprocket gear is installed, the drive of which on the VAZ 2107 injection engine is a chain with special devices.

The timing belt on an injection engine consists of:

an intake pipe and an exhaust manifold, which perform the functions of supplying hydraulic structures to the cylinders and removing exhaust gases;
crankshaft - it is necessary to activate the timing drive;
The camshaft is the main timing element, which, when rotated, regulates the operation of valves with certain phases;
valves, rocker arms, rods and pushers - they interact with the camshaft in a certain mode necessary for optimal engine operation;
timing chain drive - through a chain stretched over the gears and sprockets of the crankshaft, auxiliary units and camshaft, it drives the entire timing mechanism, as well as the oil pump and ignition distributor sensor.

The crankshaft sprocket, which is the drive sprocket, rotates at twice the speed of the camshaft sprocket, so it has a smaller diameter;
Drive sprocket for the oil system pump and sensor;
Camshaft sprocket;
The calmer is made of plastic;
A hydraulic tensioner, to which engine oil is supplied as a working fluid through a special tube through an oil sensor;
Chain tensioner shoe;
Bush-roller chain, for engines 2101-21011 it has 114 links, for engines 2103-2106 - 116.

Determining how many links there are in a chain is quite simple. It is necessary to stretch the chain to its entire length and if the links are the same at both ends, then there are 116 of them, if they are different, then there are 114 links.

There is a mark on the crankshaft sprocket; when installing or adjusting the chain, it should “look” at a special mark in the form of a boss on the cylinder block. The special mark on the camshaft sprocket should be located opposite the influx mark on the bearing housing. As a result, the crankshaft and camshaft marks should be directed towards each other.

One of the most important components of every car is the gas distribution mechanism. The proper operation of this unit affects the operation of the entire motor. The drive mechanism of the timing system on the VAZ 2107 is a chain. If it sags too much, it can jump onto one of the sprockets. If it is displaced by at least one tooth, failures in the operation of the motor occur, as well as destabilization of the speed. To avoid sagging of the chain, it is necessary to periodically tension it, and if certain signs occur, replace it.

During operation, the chain is subjected to heavy loads, so its service life is 60-80 thousand km. Adjustment should be carried out every 15 thousand km, but if the driver discovers earlier that something has begun to rattle when the engine is running, then it should be diagnosed. Before tensioning, you need to check its serviceability.

It is also necessary to check the tension in the case when the timing belt repair on the VAZ 2107 was carried out or in the case when, after tensioning, knocking of the product is still observed. The knock, or more precisely, the rustling of the chain, will not be difficult to distinguish even for an inexperienced driver. This rustling noise can be clearly heard if you lift the hood and listen to the engine at idle speed. If you add gas, the rustling disappears, which actually means that it’s time to tighten the timing chain. For this, a timing chain tensioner is used, which come in different types: automatic and mechanical.

Step-by-step instructions for stretching

Now let’s pay attention to the question of how to properly tension the timing chain on a VAZ 2107. Initially, it is worth noting that the timing mechanism on VAZ 2107 cars with an injector and carburetor fuel supply system are absolutely identical. The tension on the VAZ 2107 is performed in the following sequence:

If the actions taken are not successful and the noise remains, you will have to resort to a visual inspection of the timing mechanism, and for this you will have to disassemble the engine.

The chain tension must be adjusted by rotating the crankshaft. If you don’t have a special key to rotate the crankshaft, you can hang up the rear of the car or one of the wheels, then engage 5th gear and rotate the wheel.

Tension check

The VAZ 2107 chain is located in the front part of the engine. It is not visible, since it is covered by the cylinder head cover and the block itself. Before you start disassembling the VAZ 2107 engine, you need to understand the features of visual inspection and checking its tension. It is rational to check the chain tension only in cases where regular tensioning does not help solve the problem.

To visually check the tension of the VAZ-2107 timing chain, you must first remove the air filter housing, then the cylinder head cover. To do this, you will need a “10” wrench, with which you need to unscrew 8 fastening nuts.

When removing the cylinder head cover, special attention must be paid to the integrity of the gasket. If necessary, it is better to replace it, since in most cases an engine oil leak may occur.

After removing the valve covers, access to the upper part of the product becomes available. Here you need to inspect the tensioner shoe and damper for integrity, and then check the chain mechanism with your hands, and if that doesn’t work, you can use a pry bar or a large screwdriver.

The mount must be installed so that it stands between the chain mechanism and the block body. As a result, we get a lever that is used to check the chain tension on a VAZ 2107 car. If it bends easily, then its tension needs to be adjusted or replaced. The ideal tension is one at which the product does not bend and is taut like a string.

It is important to know! When checking the tension of the timing mechanism chain, it is necessary to avoid applying large forces, as this may lead to deformation of the device links.

Repair of VAZ 2107 tensioners is not carried out, so the product will have to be replaced with a new one. Replacement is rarely required, but the ANC “Pilot” automatic tensioner is best suited for this. After installing it, you will forget about the noise and clanging of the engine for a long time. But if you already have an automatic tensioner installed, and the engine is knocking or the chain is making noise, then there is no point in making adjustments. You will have to immediately disassemble and replace the timing mechanism parts.

Chain that needs tightening

It is necessary to tighten the chain on a VAZ 2107 in the following cases:

during long-term use of the car,
when a metallic ringing appears in the front part of the engine,
after repairs, which included removing the VAZ 2107 timing chain and other elements of this system,
before adjusting the valve clearance,
after the timing chain tensioner or tensioner has been replaced.

Main Causes of Circuit Failure

As the engine speeds up, the chain begins to rattle. In this case, the metallic ringing goes away as the speed decreases. A stretched timing chain contributes to a gradual shift in the valve timing, which leads to engine malfunctions.

All owners of cars of this brand should know how to tighten a chain on a VAZ 2107. This work is performed using a “13” wrench and a hammer. The chain is adjusted as follows.

The tensioner is discharged. When performing this procedure, the shoe should snap off. If this does not happen, it means that the timing chain tensioner plunger is stuck. The problem is eliminated by tapping the unit body with a hammer.
Using a key set to “13”, the cap nut is unscrewed.
Using a special crankshaft wrench, the pulley is turned a couple of turns.
The crankshaft stops at the moment of maximum rotational resistance. In this position, tension is applied.
While holding the crankshaft from turning in the opposite direction, tighten the cap nut.
The cylinder head cover is being installed.

In some cases, such tension is ineffective. Experienced auto mechanics know how to tighten the VAZ 2107 injector chain. To do this, you will need the following tools: 8 and 10 sockets, pliers and a ratchet with a handle. The valve cover is unscrewed and dismantled, thus providing access to the camshaft sprocket. The chain tension is checked manually.

The next step is to turn the crankshaft of the VAZ 2107 injector several turns. This work is carried out by turning on the starter for a few seconds or using a wrench that is placed on the ratchet.

The next step in solving the problem of how to tension a chain is to check the tension. To do this, it is recommended to click on the side branch of the mechanism in question. This procedure is carried out until the desired result is achieved. After this, the tensioner bolt is screwed in until it stops. To ensure that the work is completed correctly, a special scheme is used.

If the VAZ 2106 chain tension is not normal, then don’t even dream that the engine will work normally. And all because the relative angular position of both shafts will change. Because of this, the valve timing and initial ignition timing will be different.

How often does tension need to be applied?

Step-by-step instructions for stretching

The car is placed on a flat surface, the “neutral” is turned on, and the wheels are fixed.
The tensioner cap is loosened (using a 13 key), which is located near the pump.
The crankshaft is turned 2 turns clockwise, for which a special key is used (pictured).
After this, the tensioner is tightened to failure.
Next, we start the engine and listen to see if the clanging remains.
If it disappears, then the chain is tight. If there is any left, we recommend repeating the procedure from point No. 2.

If the actions taken are not successful and the noise remains, you will have to resort to a visual inspection of the timing mechanism, and for this you will have to disassemble the engine.

The chain tension must be adjusted by rotating the crankshaft. If you don’t have a special key to rotate the crankshaft, you can hang up the rear of the car or one of the wheels, then engage 5th gear and rotate the wheel.

Tension check

When removing the cylinder head cover, special attention must be paid to the integrity of the gasket. If necessary, it is better to replace it, since in most cases an engine oil leak may occur.

How to recover?

However, this method will not work for you if the tensioner plunger, which is located in the collet clamp, gets stuck. In this case you need to do the following:

1. Remove the air filter and cylinder head cover.

2. Simultaneously pressing with screwdrivers on both sides of the chain, check whether the tension is really loose. If yes, then read on.

3. Turn the tensioner cap nut half a turn. At this point you should notice the tensioner shoe moving. If it was motionless, then lightly hit the cap nut with a hammer several times. This should release the plunger.