What to do to not bend valve. On which VAZ engines do not oppress the valve? Full list. Which VAZ engine is not bent valve? Why the valve turns on the 8 valve engine

In the fall of 2015, the Field of the Light "Lad" replenished the top model - the Vesta car produced in the "Sedan" body. Asking the question "Lee valve at Lada Vesta" begins, you need to clearly imagine what engine is talking about: about 1,6-liter Russian or Nissanovsky, and maybe about the latest developing VAZ with the name "21179".

Here, options related to cars produced now either to those will begin to be issued in the near future. Also, an 8-valve motor was developed for Vesta - it is definitely not the valves for sure and will definitely not be installed on top sedans in 2016.

More information about engines that are equipped with Lada Lada Vesta in the material: !

DVS VAZ-21129, 106 "Force" (valve GNET)

Under the hood of 106-severe Lada Vesta

A little story. Motor 21129 is a finalized version of another engine, namely, 21127. The last one when the timing belt climb successfully shifted its valves, although the pistons were made by grooves (Fig. 1). The meaning is that the precision depth was not sufficient: when performing some conditions, the valve "met" with a piston with all the ensuing consequences.

With the transition to a new generation of DVS, that is, to 21129, the design of the pistons was finalized. But the outer form has not changed much, and although the recesses remained, their depth is still insufficient.

The question of Lada Vesta with the engine "21129" is considered here. And the answer turned out to be unequivocal: yes, neut.

In theory, the problem with the bend of the valves is characteristic of all VAZ engines equipped with 4 valves per cylinder. Each new 16-valve "inherits it". An exception is one rarity - DVS VAZ-2112, the volume of which is 1.6 liters. There are recesses made on conscience (Fig. 2).

122-Strong Motor "21179" (Nuts Valve)

According to its design, DVS VAZ-21179 is not very different from the predecessors. The operating volume was increased to 1774 ml, which was achieved due to the change in the length of the piston of the piston: it was 75.6 mm, it became 84.0 mm.

Elements of a connecting rod-piston group

The piston itself is now fitted to the cylinder better than in the engines 21127 and 21129. The distance from the piston finger to the bottom of the pistons increased by 1.3 mm - to 26.7 mm. But the deeper extracies in the bottom did not appear. The GHM mechanism still acts into effect the belt, and with its cliff, no one has canceled the valves.

Now we know whether the valve flashes at Lada Vesta with a 1.8-liter engine. The answer will be the same as for all 16-valve internal DVS VAZ (with the exception of 2112). The problem with the transition to the new generation remained the same. And they do not intend to return to the "heavy" pistons on a vase.

The timing of timber on the engines 21179 is not equipped with one, but by two tensioned rollers. What is done then that the design is less susceptible to stretching the timing belt.

It says here: the number of tension rollers - two

One of the tension machines can jam, but then its function will take on the second roller-machine.

Pistons that do not bend valve

Piston sets for some "old" 16-valves produce third-party companies. These parts are supplied with deep plots. The meaning is that the piston does not take to the plates and the valves could not bend.

Tuning piston for DVS 21126-21127

Elements of SPGs of different engines (21127, 21129, 21179) have compatibility. But installing pistons from the "old engines" in the Vesta motor does not need:

• In ICC 21129 after such a "tuning" will increase the losses for friction;
• If the pistons from the 26th or 27th motor to install in ICC 21179, the working volume will immediately change.

"29th", as well as the "79th" engine of Lada Vesta Gern valve only with "Vaza" pistons. But installing the "tuning" detail, do not wait for the power to increase. And also, applying non-standard elements, you can lower the resource (lose guarantees, get unforeseen consequences).

Nissan HR16DE engine (not anell, there is a chain)

Engine HR16DE in the analysis

No "deep recesses" is not provided here. Now pay attention to how the timing mechanism is arranged.

Nothing but gear and chains

The belt with the teeth is not here - it replaces the chain. It is difficult to imagine the two following situations:

• The chain could jump through the teeth of one or more gear;
• One of the elements was damaged so hard that the presence of damage led to a rupture.

While the chain remains the whole, the valves and pistons cannot meet with each other so that neither happens to the engine. The only thing that is bad - the chain can jam.

Does Lada Vesta Valve begins with Nissanovsky DVS? The answer "No" would be wrong - the chain rupture is not excluded. But in reality it will be almost impossible to face such a situation. Consider why.

Four well-known facts

Resource indicator for timing chain always exceeds the engine resource. This is the first fact, but it is necessary to fulfill the condition: the oil change must be timely. In general, the chain fails gradually, and this is accompanied by symptoms:

• Audible ghosts (dragonment) at idle;
• At the time of the "problematic section", the phases displacement may be observed.

The last defect is detected using computer diagnostics.

From the appearance of any symptom until a complete break of the chain passes a certain time. And in fact, the "defective chain" can work for a long time. It was another fourth fact.

Consequences of the timing belt cliff, video example

Greetings you friends on the site repair cars with your own hands. Experienced motorists know that the timing of the timing strap can lead to sad consequences. In particular, there is a big risk of a "meeting" of the valves already released from the nests and the piston rising on the inertia.

The result is the deformation of vital elements of the engine, as well as the acute need to visit a hundred and overhaul. But is it always when the timing belt is cutting the valve? Do I need to be afraid of this?

There are so-called unbelieving engines in which the valves and pistons will not encounter and where the belt rupture will not have more consequences than the new distribution setting. The belts of the drive belt have two sides. Internal toothed and is the topics that drags the items that must be perfectly synchronized. The outer surface is smooth, and tension rollers are supported on this surface, which cause the belt to expose, and other elements, such as water pump that do not need absolute synchronicity.

A bit of history

On the new "dozens" immediately installed 8-valve motors with volumes of 1.5 and 1.6 liters. The first power nodes (from the position of the problems described by us) were ideal, and the valve was not bent. Although on earlier models of the type of eight, nine with volume 1.3 this problem was. The reason was that the piston could not "meet" with the valves.

The timing belt is an additional element of preventive maintenance, although its changes over time are extended and will be one of the most expensive car maintenance operations. Respect for the time it is important to avoid the belt breakdown, which over time worsens.

There are a number of conditions that make it appropriate to pay more attention to the state of the toothed belts and, if necessary, change them at an early stage. For example, those who make many short trips and in the city should be special caution, like those who live in extreme climates, or park a car on the street or move in a very dusty, rainy or dirty environment.

Over time, the "Dozen" family appeared a more modern model of the VAZ 2112, equipped with a motor per hour and a half, with a 16-valve motor. From now on, problems began. Many car enthusiasts and specialists could not be in a sense, why the burning of the valve.

In fact, the reason was in the design of the power node. On the one hand, the appearance of the 16-valve head made it possible to increase the capacity of the car to 92 "horses", and on the other hand, the scope of the timing belt invariably led to a collision of pistons and valves, as well as deformities of the latter.

When replacing the belt belt, it is important not to spend and not replace all peripheral elements. Thus, we must change all tensioners and water pump if it is driven by a belt. It is also recommended to replace the sealing of the camshaft and the crankshaft to avoid possible leakage due to the deterioration of the interpretation of the distribution shafts in the future. In the case of the shafts of intermediate shafts, it is also necessary to change the drive belts and the necessary bearings.

After that, I had to go to a hundred and pass the car into expensive repairs. Constructive wines lay on the pistons themselves, where there was no necessary excavation. As a result, the scope of the timing belt has always ended in the same way.

Updated car engine

Such an oversight was adopted and already advanced 16-valve motors of 1.6 liters were installed on the new car VAZ 2112. Structurally, the power nodes did not differ much, but one feature was still present. In a new motor, the pistons had certain excavations, so the problem described above was excluded.

Bypass these elements may mean that someone has defects with a posteriori, which would mean compensation for the value of all hours, which is the most expensive in replacing the drive belt of the gas distribution mechanism. Dismantling and assembly of the gear belt is a challenge, and it is desirable that it is performed by specialized personnel. It requires some know-how and appropriate tools. Incorrect steps can lead to breakdowns and breakdowns that are easily achieved all four digits.

Problems with the mechanical valve begin to occur when the engine is subjected to overheating, lack of lubrication or twisting. The bent valves will not only damage the pistons, but also the guide valves, switchgears and the components of the camshafts. If your engine drive belt breaks while driving, serious damage to the internal engine can occur. This is especially true if your car is equipped with an intercom engine. Electric motors with interference have narrow tolerances between valves and piston caps.

Over the next few years, car enthusiasts have already become forgotten about the cut valves and are accustomed to the reliability of new 16 valve engines. But the updated model of the prior with a power node 1.6 liter unpleasantly surprised - the valve when the timing break was also bent.

At the same time, the final repair was much more expensive. On the other hand, the developers made the belt as wide as possible to minimize the probability of belt break. It was not lucky only to motorists who had a defective belt or those who did not follow their "iron horse" at all.

Excess speed in the engine

After the toothed belt is damaged, the engine continues to rotate long enough, so that the pistons and valves come into contact. Damage may include curved valves, broken pistons and damaged engine heads. Depending on the engine equipped with your car, the maximum number of revolutions per minute, which can safely work on your engine. When the maximum speed of revolutions is exceeded even for a short time, engine damage can occur, including curved valves.

Unfortunately, even on new motors of 1.4 liters with 16-liter valves also do not avoid repairs when the belt break in motion. So the monitoring of the state of this node is mandatory.

On which engines VAZ turns the valve, and on what no

We will make intermediate conclusions, as well as select the most "dangerous" and "safe" models from the position of the likely deformation of the valves in the event of a belt damage:

When the engine is overly accelerated, the valves can be "stretched" and come into contact with pistons. At excess speed, the engine cannot maintain the right time and allows the valves to touch with the top of the pistons and make serious damage to the piston and bending valves.

Problems such as the lack of lubricant and engine overheating can also lead to valve bending. If you continue to work with the engine during its overheating, the internal tolerances of the engine decrease to such an extent that the valves can stick to the guide valves, forcing the valves in contact with the pistons. Similarly, when the lubricant is insufficient, it can lead to the fact that the valves will adhere to the guides, which leads to the valve bending when it hits the pistons. In the engines with overload valves, the absence of lubrication and overheating may result in the elevators to adhere, which will lead to the formation of two curved valves and curved pushers.

1. What are the VAZ engine bent valve? This category includes car motors of the next model range - 21127, 21116, 2112, 1194.

2. What motor VAZ does not bend valve? Motors of such models of VAZ are more reliable, as 1183, 21114, 21083, 21124, 21126 (bent until 2013, and now - no), 21128.

The current problem caused a lot of disputes in the motorists environment. Many owners of "problem" VAZ are interested in what to do is not the valve. In fact, there are several recommendations.

During the restoration of the engine, it is necessary to ensure that the appropriate gap is provided between the pistons and valves, to ensure that the reliefs of the valves on the piston lids are correctly aligned with intake and exhaust valves, be careful when milling heads so that the valve is maintained in the piston direction. The specification of the lifting of the control valve before assembling the exhaust valve. If any of these specifications are incorrect, you can cause the valve bending when the engine will be restored first.

Find out that the modern car has several hoses that can stick or clog and even scary pressure when the tank cover is opened. Previously, the carbural car needed one hose for the supply of the engine, but at present the engine is required at least two, and any defect in them can lead to the fact that your car fails, stops or even consumes more fuel without saying the greatest opportunity. leaks. The tank is an example of this issue, since it clearly shows the existence of most hoses and their fundamental functions for good engine operation and gases that were previously discharged into the environment.

They are as follows:

1. First, try to periodically evaluate the state of the timing belt and make it a replacement at the first signs of damage. The appearance of cracks, hitting the surface of motor oil, excessive stretching, separation of edges - all this is a reason to install a new timing belt and do not wait for the break.

2. Secondly, if the engine is expected, the pistons can be changed, and in some cases the crankshaft. In addition, some experts recommend (as an output) installation of a new camshaft.

The main hose is the pressure of the fuel that selects the fuel under pressure to the groove, which gives the nozzle nozzles, but pay attention to the filter that remains on this line and on its maintenance, because if it is clogged, the fuel will not reach the pressure and the correct flow in nozzles. In addition, it is important to assess the overall condition of the pressure hose for possible folds or wrinkles that impede the fuel flow, but we cannot but indicate possible leaks that often occur even inside the tank, since there is a small hose it sends fuel collected by electric The pump, on the cap, and that cracks or leaks in the clips are very often detected, which ultimately create pressure loss in the system.

But here without consultation specialists, of course, can not do. After that, you may need to flash and remove the catalyst.

If you got a car where the valve is oppressed, then do not despair ahead of time. The ideal solution will be the maximum attention to the engine and more frequent replacing belt timber. Even this will be enough to reduce the risks to a minimum.

When there is a loss of the necessary pressure for proper engine operation, the vehicle may fail or deteriorate, the fuel consumption will be high due to low pressure, since the electronic injection module will have more nozzles, and at low pressure - the flow fuel will be changed and poorly controlled .

The return hose is responsible for unnecessary fuel to start the engine, which is produced by the choke, but be careful because this regulator also has a screen that can become dirty, and this may prevent the correct fuel flow and create a defect in the system. Fuel feedback was used in the past to increase the fuel pressure in informal methods that allowed a gasoline engine to work with alcohol, and is always worth checking if there is an external component in the return hose that was used for this function, or even if for any reason The hose will not bend and not closed.

As for the replacement of nodes and expensive repairs, then these costs, as a rule, do not justify themselves. Good luck on the roads and of course without breakdowns.

Often, phrases flashed in conversations in conversations: "I got to repair, cut the belt, bent the valve." Of course, we are talking about the timing belt in such cases. In order to understand the causes of the "catastrophe", consider in general terms the interaction of the rod-piston group and the gas distribution mechanism.

Returning fuel is sent to the pump bowl or case, so there is no shortage of fuel to the last drop inside the system, but, unfortunately, the bowl of the pump or the tank is not very well processed by some unsuspecting professionals that can break or do not care about its correct assembly, Which can allow the absence of fuel with low levels or curves, because the fuel can roll, and the pump delays air instead of fuel.

The most common fuel leak occurs in the sealing of the fuel pump assembly, especially after replacing the pump refueling due to normal practice, not to replace the pump cladding, which can provide leakage when the tank is filled to a maximum or even a permanent smell of fuel that exhaled by the pump seal. The fuel clutches on the pump cover are also often subjected to abuse when moving and always evaluated.

Interaction is strictly agreed, otherwise it is not to ensure the normal operation of the engine.

Principle of operation of the valve-piston system

For example, we take compression tact. When the piston, squeezing the combustible mixture, is approaching the upper dead point, it is almost close to the combustion chamber (on diesel engines to the surface of the head). If at this moment any of the valves will not be closed, then the loss of compression will be less evil. Most likely, the valve, the rod of which is rigidly held by the rocker (or camshaft camshaft) from above, will take on a piston blow.

The gases absorbed by the container will be burned by the engine, and this process is controlled by an injection module that controls the valve that allows the engine to absorb these gases. Fuel supply hoses that direct fuel from a bottleneck in the tank are victims of drying and road objects that are often rushed around the wheel and require a visual inspection whenever the vehicle passes the overview or when the smell of fuel is detected.

A strong fuel smell may also come from a fuel cap or from its bottleneck, since this cover is not unreal, so timeless, since it is one of the most loaded components due to reserves. The cap seal in most cases is located in the neck itself, and this neck may break, or the rubber seal fails. The fuel tank cover is still needed to replace, allowing fuel to evaporate through the slot for entering the key, and it is very often.

Valve bends in the event of a valve collision with a piston

In very rare cases, the manufacturer is provided in the bottom of the piston, allowing to avoid a collision. From what was said, I hope, it is clear why the valve jet when the timing belt breaks: the camshaft stops rotation, part of the valves remains in the open position, being a "convenient target" for moving on the inertia of the pistons.

Now that you know the function and the main drawbacks of fuel lines, it is interesting that you communicate with your mechanic in reviews to evaluate these important components. The existence led us there at this moment, now it depended on us to watch and understand. He approached the end of the visiting laboratory, even those that were reserved earlier, in days when he worked on earthquakes with other laboratory machines. We were there for two days, but he remained there after our departure. In general, by phone, made later, we realized that they worked for almost a week.

The coherence of the timing of timber with a crank-connecting mechanism is ensured by the accurate installation of gears or stars. For this, installation marks are made on them at certain points.

By type of torque transfer, the drive of the gas distribution mechanism can be:

• Belt
• Chain
• Sixtern

Consider common faults that can lead to valve bending.

GRM Drive Device

Consequences of the timing belt

Some inquisitive motorists are interested in the question: can I get the valve starter? The answer is easy! Just do not install the stars or gears "by labels" - and the key to the start! If the engine starts, you will immediately learn how to recognize the symptoms of the curved valves. Although, if not much "misfier", then everything can be corrected by collecting the drive of the timing of the rules.
If only one valve bends, the engine operation will be uneven. Even if this is a V-shaped "Sixer" - hear.
If, after restoring the camshaft drive, the engine operates exactly and develops former power, then you are also lucky and the manufacturer prudently put pistons with sufficient deepening in the bottoms. But, unfortunately, it is not always possible. First of all, when designing a motor, the designer achieves a combination of many, it would seem conflicting, the qualities of his "brainchild". Suppose, such as efficiency and power. This may, in some extent, serve as an excuse for the fact that on 16 valve engines it is often valve jet when the timing belt is broken.

Especially acute such problems are facing the creators of diesel engines, in which compression and the necessary twist of the fuel mixture set the power characteristics. Therefore, the combustion chamber is performed in the bottom of the piston and has often a whimsical shape.

Nevertheless, behind this is worth the accurate calculation and modeling of vortex flows on the computer. Such chambers are called unrequited and deepening for valves is impractical from the point of view of high-quality spraying and the most efficient combustion of the fuel mixture. The piston is almost close approaching the head of the block. Therefore, it is still unknown to reliably, whether there are diesel engines on which "valve negle". Although, perhaps, the human genius coped with this misfortune.

Repairs

Covered motor motor valves

In no case, do not try to restore the cut valves in any way!
Replacement, and only replacement!

If you prohibit the "eye" valve, then you risk naigted yourself more troubles. The valve restored by the handicraft method is unlikely to be coaxed with the guide sleeve and grieved tightly to the saddle. And if you want to fill the rod "a little bit", then it will work as a pump, pumping out the oil into the combustion chamber - no cap will hold.
It will be more prulterant of everything as closely to make a defective of other details. After all, the blow can damage the guides of the sleeve, loungeing valves. There are cases when visiting the connecting rods. Cutting the rumor is also not uncommon.

Models of VAZ engines, the valves of which are not "afraid" of the vehicle of the timing belt:

VAZ 2111 1.5l; VAZ 21083 1.5l; VAZ 11183 1.6 l (8m valve); VAZ 2114 1,5l and 1.6l (both 8 valves)

It is known that the old 8-valve "Opolevsky" engines (such as on Daewoo Nexia and Chevrolet Lanos), also calmly carry this trouble.

As a rule, if a person on his beloved car was brought at least one valve, even if one day, such a person already begins to understand that even the "hardware" do not have iron patience and will try to become a good owner of their "horse".

In conclusion, it will be necessary to add - follow your car, do not doubt, is there any reason to "look under the hood".

A rather relevant question is on which VAZ engines do not oppress the valve, will interest, probably, of each owner of the car from the legendary domestic producer - old or new - without a special difference. The fear of the belt cliff in some drivers even turns into a kind of parano: they begin to carry a spare belt with them, with each other case, study the state of the working, consult with all friends and familiar who have any attitude towards Avtodel. But should such actions always lead to a planned result?

On which VAZ engines do not oppress the valve, you need to know exactly, and this data will strengthen you in understanding: whether it will be possible to repair the replacement of the belt during its cliff, also the engine? After all, this procedure can take away a lot of strength and, most importantly, funds.

A bit of history

Remember the modifications of the engines on models do not represent much difficulty. But all in order! First, 8-valve engines were stood (1.5 and 1.6 liters). There was no valve on them. And all - by a simple reason: the pistons in the designed structure were not met in the case of a casus with valves.

With all improvements and increasing the number of horsepower up to 92. (from 76 - and), which was a clear plus, this motor appeared and some, not immediately noticeable disadvantages. The design of the mechanism is changed due to the new head (16 and valve). And as a bonus - a meeting of pistons with valves in the event of a GRU break (in the most inappropriate, as a rule, the moment)!

As a result- Valves bent on this model definitely. And the car owner expects a fairly expensive repair, flewing into a penny. The reason, in addition to the belt cliff, is simple - the design of the 1.5 liter engine on 16 valves: the pistons do not have special lumpeted grooves and as a result heavily beat valves. There is a bend of these parts, called the people: the valve wondered.

Fixing errors: But it passed a few years, and the designers revised their concept. On 2112 began to mount new movements of 1.6-liter volume, also 16-valve. In these modifications, it has changed little from the previous, but there were notes under the valves on the pistons, which avoid the meeting of these parts at a belt strike, and hence expensive repairs.

All repeats

Not so many years have passed, the happy owners of these vase models have already begun to get used to good. To the fact that when the belts breaks, the valve is not bent on the engine, traumating it from the inside. But it was not there! The domestic auto industry does not allow to relax and for a minute. The horizon appears prior (updated ten), modern seems to be a machine, quite decent for many. The engine is 1.6 liters, 16 valves. The car enthusiasts thought that such annoying flaws would not happen to him.

It pleases one thing, the probability of such a flaw is still reduced to the minimum designers: the belt is much wider and it is not so good. But sometimes rushing! Or, for example, a defective spare part may be caught, and the probability of a gust increases at times. What to do then? We will have to repair the engine already and not just put a new belt. Because to predict when it can happen, with hidden defects it is not possible.

It remains only to make a desire that this breakdown does not occur somewhere in a clean field, where the car does not pass often, and in the city with the ability to tow your car.

By the way, to Kalina Also set similar to the methods of destructive action on the motors valve, only, 1.4 liters (16-valve). So, as they say, be vigilant and know: what kinds of VAZ engines do not oppress the valve, and on what - goops! There will already have to constantly monitor and check the status of the belt and produce preventive actions that prevent GRM Intrivities.

Sometimes cars deliver a lot of problems to the owners. One of the most terrible breakdowns - curved valves. This happens when the timing belt breaks. After cliff, the valves fully fail. Let's figure out for the reasons, as well as learn how to prevent and repair.

Why are the valves are needed in the engine?

First you need to explore the theory. Probably, every car enthusiast knows the number of cylinders in the engine of his car, but not everyone can answer the question about the number of valves. In most modern, 2 to 16 valves can be from 8 to 16 valves. There are such power units where they can be 24 or more. The valve is an important part of the engine. It is responsible for supplying the fuel mixture into the combustion chamber and for the exhaust gas output to the exhaust system. On each cylinder comes from two valves: one intake, second - graduation. In 16-valve motors, each cylinder accounts for four valves if the four-cylinder motor. There are also engines, where inlet elements are larger than final. These are three- and five-cylinder engines.

The valve consists of two parts - this is a plate and rod. Under the blow when the timing belt takes the rod. Valves are driven by means of exposure to the camshaft. He, rotating around his axis in the CFC, can lift and lower the valves.

It is activated from the crankshaft - the two of these elements in any DVS are related to the belt, gear or chain drive. Through a toothed transmission camshaft rotates inside the cylinder block. This transmission rotates camshaft into the GBC. Today, the engine is more common, where belts are used.

The latter have a simple design, such a mechanism is cheaper in production. However, their reliability is significantly lower than in the case of a chain drive. The latter is more complicated - there are also additional elements. These are the calm chains and stretch rollers.

Why bend?

The situation when the valves be bent can happen in any engine of any design. It does not matter how many cylinders in the engine and how many valves in it. The reason for the breakdown is simple, and it is alone. This is a belt break in the drive or chain. The latter are much less common compared to belts. In the case of chain, it is stretched, and the stars jump.

The camshaft after breaking the timing belt stops dramatically. Crank at the same time will continue its movement. So, the valves that are recessed in the cylinders will face pistons when they reach the position of the upper dead point. And since the pistons have great shock energy, then with ease bent or broken open valves.

Elimination of the consequences of this breakdown is very expensive. You need to pull out all damaged valves from the engine. It also necessarily suffers the entire head of the cylinder block. It is not always possible to restore the GBC, and then only the replacement for a new or contractual one will help.

Causes of timing belt

The most common causes that lead to the breakup of the drive belt are non-compliance with the owners of the prescriptions of the manufacturer for replacement. When the car is new and is under warranty, the owners very rarely look under the hood - the official dealer will perform all service performance. When the warranty ends, many are trying to save on the replacement of the belt.

Often it can fail the pump. In many models, it is driven by the timing belt. If the pump fails, then the system is broken, and the belt will move in a few hours. Also one of the most popular reasons is low-quality belts. Therefore, it is better to acquire high-quality and original consumables.

Distributional shafts may fail, as well as the latter fall off or can bump - a belt or flies from the gear or a break occurs. That's why valves bent on the VAZ.

With a belt may not only happen. Often, the teeth are cut off, and they are not so easy to discover. The teeth can slip if the spring of the tensioner roller broke. On some Motors, the camshaft gear has a special gear insurance, only a tightened bolt serves as insurance. If you do not reach it, that is, the risk that the gear will be checked, and as a result, the valves turn. Replacement is the only way out of the situation.

How to avoid trouble?

There is only one way. It is necessary to accurately comply with the manufacturer's regulations for replacing consumables. The replacement is subject to not only the timing belt, but also stretch rollers, as well as other elements that are in engaging with the belt and are indicated by the manufacturer in the regulations.

All components should be purchased only in tested automotive stores.

Is it possible to get a starter?

Starter turns valves, and easily. This happens if it is incorrectly installed the stars or gears of the gas distribution mechanism for the respective marks. Then enough to twist the starter. If the motor starts, the driver will immediately learn how to recognize that the valves bent. But if you miss the labels slightly, the breakdowns can be avoided. In order to solve the problem completely, it remains to collect the drive according to the rules.

How to define bent valves?

Determine the eye that the valves be bent, it is impossible. This requires a simple, simple actions. Initially, you need to install the timing belt on the labels, and then turn the crankshaft manually. It is usually required to make from two to five revolutions to find out that the valves are really bent. If the crankshaft will rotate easily and calmly, then the GDM elements are intact. When rotation is difficult, the valves are damaged.

It also happens that with the free and easy rotation of the crankshaft valves, the valves still bent. In this case, it is possible to identify the problem with measuring compression. If the compression is zero, then the GDM elements are damaged. Many do not know how to check whether the valves be raised. It will be heard. The engine will work unevenly. It is well felt even on large engines, where six or more cylinders.

What motors do not oppress the valves?

Such motors exist. Some engines even produced AvtoVAZ. The whole secret is in pistons with special excavations on the working part of the piston. These recesses are made specifically under the valve. When the timing belt breaks, the element will simply go to these holes, and the design will remain a whole. It will only be necessary to set the gears on the labels and install a new belt.

How to find out if the valve engine is oppressed?

But it will not work. There are no tricks and signs here. Visually reveal whether the motor is safe, it will not work.

There are also no inscriptions or any mention. Information can be obtained in the operating instructions or from the official dealer.

Conclusion

In order not to engage in the valve replacement, it is recommended to change the timing belt on time. If this is a car brand "AvtoVAZ", then you can install special protected pistons. But they eat part of the power and increase fuel consumption. It is necessary to remember that when the belt is cut, the gas distribution mechanism fails not only valves - the whole head can be broken. And it makes repairs even more expensive. It should not save on the timing belt.

Greetings you friends on the site repair cars with your own hands. Experienced motorists know that the timing of the timing strap can lead to sad consequences. In particular, there is a big risk of a "meeting" of the valves already released from the nests and the piston rising on the inertia.

The result is the deformation of vital elements of the engine, as well as the acute need to visit a hundred and overhaul. But is it always when the timing belt is cutting the valve? Do I need to be afraid of this?

A bit of history

On the new "dozens" immediately installed 8-valve motors with volumes of 1.5 and 1.6 liters. The first power nodes (from the position of the problems described by us) were ideal, and the valve was not bent. Although on earlier models of the type of eight, nine with volume 1.3 this problem was. The reason was that the piston could not "meet" with the valves.

Over time, the "Dozen" family appeared a more modern model of the VAZ 2112, equipped with a motor per hour and a half, with a 16-valve motor. From now on, problems began. Many car enthusiasts and specialists could not be in a sense, why the burning of the valve.

In fact, the reason was in the design of the power node. On the one hand, the appearance of the 16-valve head made it possible to increase the capacity of the car to 92 "horses", and on the other - brim belt break invariably led to a collision of pistons and valves, as well as deformities of the latter.

After that, I had to go to a hundred and pass the car into expensive repairs. Constructive wines lay on the pistons themselves, where there was no necessary excavation. As a result, the scope of the timing belt has always ended in the same way.

Updated car engine

Such an oversight was adopted and already advanced 16-valve motors of 1.6 liters were installed on the new car VAZ 2112. Structurally, the power nodes did not differ much, but one feature was still present. In a new motor, the pistons had certain excavations, so the problem described above was excluded.

Over the next few years, car enthusiasts have already become forgotten about the cut valves and are accustomed to the reliability of new 16 valve engines. But the updated model of the prior with a power node 1.6 liter unpleasantly surprised - the valve when the timing break was also bent.

At the same time, the final repair was much more expensive. On the other hand, the developers made the belt as wide as possible to minimize the probability of belt break. It was not lucky only to motorists who had a defective belt or those who did not follow their "iron horse" at all.

Unfortunately, even on new motors of 1.4 liters with 16-liter valves also do not avoid repairs when the belt break in motion. So the monitoring of the state of this node is mandatory.

On which engines VAZ turns the valve, and on what no

We will make intermediate conclusions, as well as select the most "dangerous" and "safe" models from the position of the likely deformation of the valves in the event of a belt damage:

1. What are the VAZ engine bent valve? This category includes car motors of the next model range - 21127, 21116, 2112, 1194.

2. What motor VAZ does not bend valve? Motors of such models of VAZ are more reliable, as 1183, 21114, 21083, 21124, 21126 (bent until 2013, and now - no), 21128.

The current problem caused a lot of disputes in the motorists environment. Many owners of "problem" VAZ are interested in what to do is not the valve. In fact, there are several recommendations.

They are as follows:

1. First, try to periodically evaluate the state of the timing belt and make it a replacement at the first signs of damage. The appearance of cracks, hitting the surface of motor oil, excessive stretching, separation of edges - all this is a reason to install a new timing belt and do not wait for the break.

2. Secondly, if the engine is expected, the pistons can be changed, and in some cases the crankshaft. In addition, some experts recommend (as an output) installation of a new camshaft.

But here without consultation specialists, of course, can not do. After that, you may need to flash and remove the catalyst.

If you got a car where the valve is oppressed, then do not despair ahead of time. The ideal solution will be the maximum attention to the engine and more frequent replacing belt timber. Even this will be enough to reduce the risks to a minimum.

As for the replacement of nodes and expensive repairs, then these costs, as a rule, do not justify themselves. Good luck on the roads and of course without breakdowns.