What causes the VAZ 2110 8-valve injector engine to fail?

Causes

There may not be many reasons for the VAZ 2110 engine tripping, but it will be difficult for a beginner to find the fault. Here are some possible causes of a failing cylinder.

• Candles;
• Ignition module;
• Wires;
• Air leak;
• Injector not working;
• ECU;
• valves;
• Piston group;

Let's look at each of the reasons in detail.

Candles

The most likely problem is the spark plugs. Quite often, spark plugs fail, thereby disabling one of the car’s cylinders, or even more. This is due to low-quality fuel at our gas stations. It is recommended to change spark plugs every 30-40 thousand km. You can read how to do this here.

Ignition module

In the VAZ 2110, the ignition module is responsible for the formation of a spark. This is a large coil that produces a spark for every 4 cylinders in pairs of 1-3 and 2-4 cylinders. If the coil is faulty, then two cylinders will not work at once, and not just one.

It is worth noting that the cost of this element is very expensive, around 2000 rubles, to make sure that it is broken, it is best to ask a neighbor for a known good module and install it on your car in order to exclude other causes.

Wires

High-voltage wires conduct the spark from the module to the spark plug. They must have strong insulation and the slightest crack in their insulation leads to a spark breaking through to the body, which will lead to the car shaking. Driving with bad wires can damage the ignition module.

Air leak

It often happens that over time, rubber products and gaskets on VAZ internal combustion engines fail under the influence of high temperatures; they lose their elasticity and begin to leak air. Air leaks, which can affect the combustion of the internal combustion engine, are located on the sealing rings of the injectors and on the corrugations of the receiver or its rings. You can read how to check a car for air leaks in our article.

Injectors

The nozzle is one of the important parts of the car injector; it supplies a portion of fuel into the combustion chamber of the cylinder. Its failure is predicted by one of the non-functioning cylinders. Very often, the injectors become clogged and thus do not ensure normal operation of the internal combustion engine. You can read how to clean the injectors yourself with your own hands here.

The engine control unit contains so-called keys to each cylinder; it is according to their readings that the air-fuel mixture is formed for the operation of the internal combustion engine. When they fail, the correct operation of the engine is out of the question. Fortunately, this happens quite rarely and is very unlikely.

Causes of unstable engine operation

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

Systems and individual components are checked:

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

Electrics

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

First, the candles are inspected:

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

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

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

• ignition coil malfunction;
• broken wires.

The spark plug operation is checked in the following sequence:

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

Cylinder operation

If the VAZ 21108 engine has 8 valve injector valves, then a possible cause may be poor cylinder performance.

When it is determined that everything is in order with the electrical part, the following actions are carried out:

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

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

Ignition

VAZ 2110 engine 8 valves, the injector may trip if the coil is faulty.

To check, the following steps are carried out:

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

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

Depressurization of the system and air leaks

If the VAZ 2110 engine has trouble, the cause of the malfunction may lie in excess air supply. As a result of depressurization, uncontrolled suction occurs, which leads to disruption of the functioning of the system.

To check for a leak, carry out the following steps:

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

Insufficient amount of air in the combustible mixture

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

The following problems exist:

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

Fuel injectors

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

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The ramp is subjected to external examination for cracks or dents.

Pistons and rings

A malfunction in the piston system often leads to the fact that the VAZ 2110 engine begins to misfire. It depends on the mileage traveled by the car.

Unstable operation occurs for the following reasons:

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

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

Sensors

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

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

Trouble with the VAZ 2110 engine, 8-valve injector - looking for the cause

Let's consider this problem in VAZ 2110 2112 2111 cars: the engine is trembling, one cylinder is not working, there is no compression. Our engine is 8-valve. The engine starts well, but during its operation it is clearly felt that it is adjusting, one of the cylinders is not working as it should. The first step is to measure the compression to understand which cylinder has the problem.

We unscrewed the spark plugs, in one of the cylinders (in the third) the spark plug was very black and flooded. Most likely the problem lies in the third cylinder. We measure the compression in it, 3 atmospheres maximum, in others it is much better. Most likely a valve or piston has burned out; you need to remove the head to find out the exact cause. We remove the head and clearly see the burnt valve in the third cylinder

Why does the VAZ 2112 engine suffer from injector problems? Let's look at the 16 valve version. Mechanic's opinion.

One of the most frequently asked questions from owners of domestic cars is why the VAZ 2112 engine has a 16-valve injector. This is quite common. Moreover, there may be several reasons, and finding them is quite difficult. At a minimum, you need to know where to look for the problem. If you ask any motorist about the reasons for this phenomenon, you can hear a variety of advice. But often they are all one-sided. And you need to approach the search purposefully, checking all possible options. Only then will you be able to reliably find the fault and fix it. First, decide on the symptoms of “motor tripping”...

THE CONTENT OF THE ARTICLE

They consist in unstable operation of the engine, and it usually rattles like a decrepit Cossack. This is especially noticeable on four-cylinder units. You can also notice pronounced vibration in the engine compartment. The smell of gasoline is often felt in the cabin, and fuel consumption becomes significantly higher.

Main reasons

Why does the VAZ 2112 engine troit the 16 valve injector? This phenomenon may be a sign of a malfunction of several systems at once. Therefore, it is impossible to answer this question unambiguously. When searching for a problem, you will need to check the following systems:

• Ignition;
• Nutrition;
• timing (valve);
• Piston group;
• Sensors and ECU.

The check can be performed in any order. It's better to start with diagnostics. Very often this helps to narrow down the search to one system. Therefore, do not neglect this method of troubleshooting.

Ignition

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

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

Nutrition

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

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

Valves and piston

These systems are tested together. First you need to remove the breather hose from the manifold. If white smoke comes from it, then the cause of the cylinder failure is definitely the piston. You should disassemble the engine and see what happened.

Most often, the rings are stuck; to eliminate them, you will have to remove the pistons. If there is no smoke, or it is almost colorless, then the problem is in the valves. First, let's measure the compression. If it is less than 11, then the diagnosis is a burnt valve. You will have to remove the head, change the valve and grind it in. If everything is fine with compression, remove the engine cover and check the valve adjustment. The engine can fail either because the valve is tight or because it is too loose. In any case, they need to be adjusted.

Crankshaft position sensor (CPS)

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

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

Now a short video with another reason.

Conclusion

Very often, drivers are faced with the problem of an unstable engine. This problem occurs quite often on this model. Therefore, every owner needs to know absolutely all the causes of the malfunction and how to determine them.

Of course, this article is more informative, but perhaps the most basic problems are described here; if you fix them, then in 90% of cases the problem will go away. That's all, read our AUTOBLOG.

The main reasons why the engine in a VAZ 2110 car fails

You already know how tripling occurs, but the problem still lies in some kind of malfunction, which causes the cylinder to stop working. Unfortunately, there can be several reasons why an engine is misfiring, which seriously complicates the search.

The cylinder will work

1. Start the engine and open the hood.
2. Listen to the engine and try to remember it.
3. Next, we take out the high-voltage wires one by one. When the wire is pulled out, the engine operation should change, because the spark plug stops receiving current, therefore the cylinder stops working. If the engine operation has not changed, then this is a bad cylinder. You need to search until you find which cylinder is not working.

Now, you need to find out whether a spark is entering the cylinder or not, this will allow you to understand the reason, and also indicate the direction in which you need to move.

The spark plugs will work

1. Take a spark plug and unscrew the spark plug in the non-working cylinder.
2. Assess the condition of the electrode using the following criteria:
3. Soot or soot on the spark plug prevents its normal operation, the spark is weak or completely absent. Cleaning the spark plug or completely replacing it will only temporarily solve the problem; you need to look at the root of the problem and continue to look for the reason why the spark plug is in this condition.

Checking the spark plug for a spark

Take a spark plug and unscrew the spark plug in the non-working cylinder.

Assess the condition of the electrode using the following criteria:

To find out the real reason why the engine is stalling, you need to check the spark. To do this, unscrew the spark plug, then put on the high-voltage wire and place the spark plug with its metal body facing the engine, but the spark plug electrode should not touch the engine. Next, you will need an assistant, he should turn the starter, and in the meantime you watch the spark plug. If a spark does not appear when the starter rotates, move it away from the ground by 1 cm and try again.

If there is no spark or it is very weak, then this indicates that:

• Problems with high-voltage wires - high resistance or breakage. Check the high-voltage wires with a multimeter; if there is high resistance, replace them.
• The ignition coil is faulty - check if this is the case and replace it if necessary.
• The ECU is faulty. Carry out diagnostics and replace if necessary.
• The DPKV (crankshaft position sensor) has failed. As a rule, with such a breakdown, an error appears that is generated by the on-board computer; you can also find out about it using computer diagnostics. If necessary, replace the DPKV.
• The timing belt has moved several teeth. Check how the belt is positioned; if its position is broken, remove the belt and adjust the position of the shafts and gears according to the marks.
• If there is a spark and the spark plugs are in perfect order, look further for the reasons why the engine is misfiring; possible problems may include: compression problems, faulty rings, clogged injectors, poor valve fit, or the need to adjust the valves.

Eliminating the causes of engine tripping

If the VAZ 2110 injector continues to misfire the engine with insufficient spark current or its absence, then the reason for this situation is the following defects:

1. Faults in high voltage wires - increased resistance of the product or breakage. It is necessary to test these products with a multimeter connected; if measurements indicate a malfunction, they need to be replaced. 2. Suspicion of a defect in the “bobbin” - check and replace if necessary. 3. The on-board computer is not working correctly - diagnostics and troubleshooting are required. 4. The engine crankshaft position sensor produces incorrect data - eliminate the error that occurs; if this is not possible, replace the device with a new device. 5. The position of the timing belt has changed - install it in the correct position, adjust and install the shafts and gears according to the risks.

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If there are sparks and working spark plug elements, we continue to look for what is causing the engine to stall and the traction to disappear. Other reasons may include:

• problems with compression;
• defective piston rings;
• clogged nozzles;
• loose contact of the valves with the seat on the cylinder head;
• unadjusted valves.

In practice, there are situations when the engine in a VAZ 2110 only stalls on a cold engine or on an “engine” that has reached the optimal operating temperature. In this situation, the main problem is the valves, or rather, their adjustment, which must be carried out after 20,000 km. The reason for this phenomenon on a cold engine is an increased valve clearance, which decreases after the power plant warms up.

The situation with warm engines is similar, but diametrically opposite. When the unit is cold, the valves have a normal clearance, and after warming up, due to the expansion of the metal, the valves are clamped, the cylinder does not function, and the engine speed begins to float, which causes the effect of incorrect operation of the power plant.

The VAZ 2110 engine troits both cold and hot

In this case, the valves are most often the cause; they may have become misadjusted. Valve adjustments should be carried out every 20 thousand km. The essence of this problem is that most likely the valves have large gaps, but after the engine warms up they become smaller and the engine does not leak. The same is true “on a hot day” - when the engine is cold, the valves are normal and the engine is running smoothly, but after warming up, the unadjusted valve clamps, as a result, the cylinder stops working and the engine begins to stall.

I will end here, I hope my article was useful to you and you found the reason for the engine tripping. If not, seek help from specialists. If you know other reasons for engine tripping, I’ll be happy to hear them, use the comment form.

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

The engine is the main and most complex component of any car. If you do not monitor its condition, do not carry out preventive maintenance, or timely repair of engine components, various malfunctions will arise over time.

Almost the most common problem with engines, including VAZ 2110 engines, is tripling.

Engine 10ki

Conclusion

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

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

Symptoms of a problem

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

There are several signs in total.

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

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