Sometimes the owners of products of the domestic auto industry are faced with a situation when the injection engine does not pull on the VAZ 2114. This problem is not uncommon, so we will try to thoroughly understand the reasons for the “weakness” of the engine and eliminate them ourselves.

List of possible causes of power drop

To quickly answer the question: why the engine thrust of the VAZ 2114 with 8 valves has disappeared from the first time, not everyone, even an experienced driver, can.

To do this, you need to consider all possible sources of damage:

• debris getting into the gasoline filter;
• blockage of the fuel pump diaphragm;
• malfunction of the sensor that controls the air flow;
• poor work of candles;
• a malfunction in the ECU (electronic engine control unit);
• dusty air filter;
• clogged nozzles;
• complete wear of the clutch disc;
• insufficient compression in the cylinders.

Analysis of the causes of poor engine traction and possible repairs

Dirty fuel filter

This may be due to low-quality gasoline (containing various small debris) or a rare cleaning of the fuel tank. In this case, you will have to completely replace the entire filter system.

Gas pump diaphragm clogged

As a rule, the cause of the blockage is low-quality gasoline. To clean it, you just need to take out the diaphragm and rinse it thoroughly or blow it out with air.

Malfunction of the sensor that monitors the air flow

This is the most common reason why the VAZ 2114 does not pull.

Malfunction symptoms:

• too high or low engine idle speed;
• intermittent engine idling;
• disturbed dynamics of acceleration. The car becomes uncontrollable and often freezes.

It is worth checking the operating condition of the air flow meter periodically to avoid wasting time and money diagnosing the engine.

Dusty air filter

The more the filter is clogged with dust, the less air enters the engine, therefore, the thrust decreases. What can be done in this case? Ideally, the filter should be replaced with a new one, but if this is not possible, remove the filter, tap and blow to remove large debris (flies, dry leaves, insects).

Clogged nozzles

If the injector nozzles are clogged, you will have to go to a service station for ultrasonic cleaning, or purchase a special cleaning fluid.

Auto mechanics advise to purchase only high-quality injector cleaning products, for example, Wynn's (Vince), LIQUI MOLY, Carbon Clean.

The procedure itself is quite simple: the cleaning agent must be poured into the gas tank. But this method can only help if the fuel system is not heavily contaminated. An engine with a mileage of several hundred thousand kilometers is likely to require a complete replacement of the injectors.

Complete wear of the clutch disc

Disk wear can be determined by the following criteria:

• the pedal is easily "sunk", but does not come back;
• the clutch slips;
• when the clutch is engaged, a noticeable vibration occurs;
• it is impossible to disengage the clutch.

There is another way to check for wear: if you try to move away in fourth gear and the engine stalls, then there are no problems with the disc. If the engine continues to run, then the clutch disc will most likely have to be replaced.

Poor candlestick performance

There are several signs by which you can determine if a spark plug is faulty:

• the engine makes an unpleasant noise when idling;
• a sharp press on the gas causes dips in power;
• the engine runs unevenly;
• increased fuel consumption with a decrease in power;
• the candles are filled with gasoline.

Visual inspection of the spark plugs can also help identify the problem. If the candle is covered with dark oil, has a gloss or velvety carbon deposits, then this clearly indicates a problem.

Defective spark plugs must be replaced with new ones.

Insufficient compression in the cylinders

This defect appears due to high wear of the entire cylinder-piston system. As a result, the car owner notices that the oil consumption increases, the combustible mixture does not completely burn out, and the fuel enters the crankcase. This problem is serious and can be solved either by replacing the piston rings or by completely repairing the engine at a service station.

Malfunction of the electronic engine control unit (ECU)

There may be several signs of an ECU malfunction:

• various mechanical damage on it;
• lack of indicators from various sensors monitoring systems;
• lack of control signals for the fuel pump, the idle system of the machine and other mechanisms controlled by the ECU.

Unfortunately, this device cannot be repaired in most cases. Even service station specialists will offer to simply replace the ECU with a new one, after carrying out diagnostics.

Finally

The article lists all the possible reasons why the VAZ 2114 does not pull. Every motorist can independently analyze them and figure out the reason for poor engine thrust. This will save you a significant amount of money compared to the cost of diagnostics at a service center.

Cars VAZ-2114, from the beginning of production, are equipped with eight-valve engines with a volume of 1.5 liters. Since 2007, they have been equipped with an eight-valve 1.6 liter engine with an environmental class Euro-4. The operation of the car, sometimes not correct, over time presents "surprises". not at full power, the thrust is reduced. Let's try to understand the reasons and methods of elimination.

The dynamics of the car, first of all, depends on the stable and stable operation of the engine. When the indicators of this characteristic decrease, this indicates that there are problems in the operation of the engine.

VAZ-2114 engine

Unstable engine operation is caused by the following:

• The fuel filter is dirty.
• The diaphragm of the fuel pump is clogged.
• Do not work or.
• Insufficient.
• The on-board computer is malfunctioning.
• The nozzles are clogged (you need to clean them or).
• The clutch disc is worn out.
• Malfunctions of sensors that control: the position of the crankshaft; coolant temperature; ; detonation.

These are just some of the possible reasons why the engine can pull poorly throughout the rpm range.

It is worth mentioning the fuel pump, which fails. The real state of affairs is determined by detailed diagnostics.

A brief analysis of the causes and their consequences for the VAZ-2114

1. Fine filter contamination ... Determined visually. Debris particles present in the fuel tank, gasoline accumulate in the filter, the channels are clogged. Insufficient fuel supply. "Treatment" - .

   Changing the fuel filter

2. The diaphragm of the fuel pump is clogged ... The reason is the same, there are dirt particles in the gasoline. Solved by excavation, flushing, blowing with compressed air

   We change the grid of the fuel pump

3. Clogged air filter ... For a short time, it is solved by blowing the filter, you can knock on a solid object. Ideally, the filter is replaced with a new one.

   We clean or change the air filter

4. Candles do not work or work poorly ... Determined by inspection, after unscrewing. One of the reasons - . The gaps are checked with a feeler gauge, the necessary one is installed. For this, the side electrode is bent to the required value.

   Checking the gap between the spark plug electrodes

5. Formed. The electrodes are cleaned with sandpaper (zero), cleaned, and the gap is checked.

   Cleaning spark plugs from carbon deposits

6. The serviceability of the spark plugs is checked on a stationary stand. If problems occur, need to be replaced.

   Candles are best checked at a stand in a car service

7. Insufficient compression in the cylinders ... This defect appears as a result of high wear of the cylinder-piston group. The result is increased oil consumption, incomplete combustion of the combustible mixture, and gasoline enters the crankcase. In some cases, it is sufficient to replace the piston rings, in others, an overhaul of the engine is required.

   We measure the compression in each cylinder

8. Failure or breakdown of the electronic control unit ... It is impossible to repair without special knowledge. Diagnostics is carried out with special devices. A flashing is possible, or the control unit changes completely.

   We carry out diagnostics of the control unit

9. Clogged nozzles ... ... There are additives in fuel, but they do not give much effect. Replacement may be required, so read the resource: ““.

   You can clean the nozzles at home.

10. The clutch disc is worn out ... In motion, with an increase in revolutions, the car does not pick up the required speed, slipping is felt. Expertly checked by starting off in fourth gear. If it stalls, everything is in order with the disk, if the engine is running, then there are problems. Solved by replacing the clutch disc.

    Illumination of the Check engine sensor indicates a malfunction of the sensors

conclusions

Maintenance (MOT), which should be carried out according to the manufacturer's recommendations, will avoid many problems. The only question is where to go, at the "kulibins", or at specialized service stations, equipped with the necessary equipment and apparatus. The choice remains with the vehicle owner. The sooner the prerequisites for the failure of a particular part are revealed, the less financial losses in the future.... It should be remembered that timely maintenance increases the safe operation of the vehicle.

For the engine to reach its full power, the following conditions must be met:

1 - good compression of the engine;

2 - stable and abundant fuel supply;

3 - a lot of air.

If one of the above conditions is not met, then the efficiency of the motor will be low.

When thrust is lost under load, this means that the engine control unit has entered emergency mode. Emergency operation of the engine is provided on all modern machines. This mode is necessary so that the car does not quickly, but safely reach its destination.

To find the right reason it is necessary to carry out computer diagnostics of the engine.

Based on the results of computer diagnostics, we will understand which direction to move and where to dig in order to find out the true cause of the malfunction.

If diesel the engine runs out of fuel, then check the fuel equipment:.

If the diagnostics show that there is enough diesel fuel, and the turbine is underblowing and there are no errors in other systems, then it is advisable to measure the engine compression.

Failure to properly compress the engine will result in the engine will not pull and develop its full power. If there is no compression of the piston, but there is a sufficient amount of air and fuel, then a strong explosion will not happen anyway, thus there will be no good exhaust, but as we know, the exhaust spins the turbine, so the turbine will not inflate the required volume of air. Lack of airflow will result in the car not pulling.

The most common the reason for the lack of air boost- problems in the operation of the turbine and the shutdown of the turbine itself.

Consider a variable geometry turbine engine (the most common).

Turbine shutdown, as a rule, occurs due to one of two problems: one is related to air, the other is due to a mechanical malfunction of the turbine itself (wear of impellers, axle backlash).

There are variable geometry turbines that are controlled by a vacuum, and there are those that are controlled by an electronic actuator.

The machine is equipped with four sensors that completely influence the operation of the turbine.

1 - Boost pressure sensor. They measure the air pressure in the intake manifold.

2 - Boost pressure regulator. This is the valve that controls the geometry, i.e. turns the turbine on and off.

3 - Intake air temperature sensor. Shows the temperature of the air entering the motor.

4 - Atmospheric pressure sensor. Measures the atmospheric pressure where the vehicle is moving (normal atmospheric pressure relative to sea level).

Most often it happens that the tightness of the air intake system is broken in the car. Thus, the turbine drives all the air out (torn pipe, poor connection at the joints, cracked intercooler (air cooling radiator).

To identify such a problem, it is necessary to check the entire air intake system for leaks.

The next most common problem: Faulty geometry in the turbine.

To check the geometry on the car, you need to remove the vacuum hose from the actuator on the turbine itself. Put another hose on it and try to draw in air with your mouth or a special device. After this procedure, the rod that controls the geometry should change its position. If it does not change its position, then there may be 2 reasons either the diaphragm in the actuator has broken, or the geometry itself has jammed.

Failure of the boost pressure regulator and boost pressure sensordetected by the presence of errors on them in the results of computer diagnostics.

The boost pressure regulator can also be checked with a vacuum gauge.

We must remember to check the vacuum pump and vacuum tubes throughout the machine for leaks. This is done as follows, disconnect the branch pipe in some place, put your hand, air should be felt.

A turbine with an electronic actuator can only be checked using computer diagnostics!

Note that the loss of traction can also be affected by "vortex" flaps (not available in all vehicles).

We hope that this information will help you identify the reason why your car is not pulling or gaining full power, as well as gain enough knowledge to communicate with car service specialists.

Often beginners and not only drivers are interested in why the car does not accelerate and pull. Typically, this problem is related to the engine. At the first sign of a malfunction, it is advisable to carry out a detailed diagnosis of the engine. This will save you from a long search for a breakdown. Almost anything can cause a motor to lack thrust.

Owners of new cars often encounter this. If diagnostics fail to identify the problem, then you will have to suffer a little. This is connected and will pass to a run of 5000 km. Most often this is found in models of components that are assembled in China.

Wear of parts

Why doesn't the car accelerate and pull? In some cases, this may be due to a high level of engine wear. Usually seen on fairly old machines. Most often, the rings suffer, in connection with this, the compression falls. Therefore, the first thing to do when reducing power is. If even in one cylinder the indicator is less than 11, then the engine will have to be overhauled.

Sometimes a decrease in engine power indicates the presence of carbon deposits on the valves; this can only be checked by removing the cylinder head. Indirect signs:

• Change in the ratio of gases in the exhaust;
• Burning on the panel "check".

To eliminate it, you will have to clean the valve. After this work, everything should be normalized.

Filters

Often the car jerks due to lack of fuel... Fuel filters are installed in every car. There are usually two of them. The coarse filter is either in the fuel pump, or it is embedded in the hose. A fine post-treatment filter is installed in front of the injector. If any of these cleaners are clogged, fuel cannot enter the injector sufficiently. This, in turn, dramatically reduces the efficiency of the car.

In the summer often air filter clogged... In this case, the mixture is poorly enriched with oxygen, and the fuel does not burn completely. As a result, there is a loss of power again. To avoid such problems, it is necessary to replace the filter elements in a timely manner.

Ignition

A modern engine is quite sensitive to ignition work. Incorrect spark plug electrode gap can cause engine failure. And, accordingly, to a decrease in engine power. Therefore, always. You also need to check their performance at a special stand. It can also be done in a simple but reliable way.

For this, the candle is unscrewed. A high-voltage wire is put on it, after which the engine is cranked with a starter. The quality of the spark is determined visually. It should be white and blue. If the spark is red or yellow, it is considered poor quality. Look for a problem in the ignition system. This is most likely the reason for the loss of power.

Diagnostics

For a more precise definition of the problem, it is desirable. This procedure will help identify sensor and power problems. To do this, you need a laptop with a special program. Having deciphered the readings, you need to start troubleshooting. Most often, the reasons may be as follows:

• Malfunction of the crankshaft position sensor. With this malfunction, the "Check engine" is usually lit. A decrease in power occurs due to a mismatch between the impulse supplied to the engine control unit and the real position of the crankshaft. As a result, incomplete combustion of fuel occurs, and the efficiency of the motor decreases;
• ... This problem can also affect engine power;
• The reason may be due to. In this case, the check will not light up. Therefore, in any case, it is necessary to carry out diagnostics.

Conclusion... As you can see, there are enough reasons for the problem and they are all quite diverse. Offhand to say why the car does not accelerate and pulls will not be able to any auto repairman. In any case, you will have to carry out thorough and painstaking work to diagnose and search for the causes of the malfunction.