Why the engine does not develop turnover: possible causes and ways to eliminate. The engine is badly gaining momentum - where to look for the problem? Does not gain momentum on

The most unpleasant kind of problem is when something in the car broke half. In such cases, the search for a malfunction turns into a complex task resembling Fishing. Common example: the engine does not gain momentum after pressing the accelerator pedal. The car goes, but it is not capable of accelerating to normal speed - the engine "sneezes" and stalls. If you decide to find the problem yourself, read the complete list of the reasons that cause inadequate behavior of the power unit.

Fuel system problems

If you encountered the problem of the power drop in the power of the motor, start searching for a fault from the fuel feed system. After all, if the engine does not respond to the opening of the throttle, either begins to stroke, it is logical to assume that it is not enough fuel trite. Your actions:

1. Remember when a fine cleaning filter has changed and check its condition. The flooded filter element skips an insufficient amount of gasoline, which only enough to work at idle without load.
2. A common reason is a mud mesh benzone pump located in a tank. Often, motorists ignore it to replace, installing only a new filter. To check the grid of rough cleaning, you will have to disassemble the gas tank and pull out the pump.
3. Flaked with a bypass valve pressure dropping the surplus fuel back to the tank. It is checked by measuring the pressure in the fuel ramp through a special fitting.
4. If in a closed garage where the car is stored, the smell of gasoline is felt, go through the entire fuel line, examining for leakage.

Note. The clogged filter indicates a long fuel pump noise, audible after the ignition is turned on. The unit cannot raise the pressure in the highway to the norm and is not turned off for a long time.

More serious malfunctions to detect more difficult. Both gasoline and diesel engine may suffer from improper work or nozzle failure. Their performance is checked by removing and connecting to a power source. The sprayer must create a smooth beautiful "torch", otherwise subject to replacement.

The reason for the flaw in the diesel engine is often the fuel pump, which creates high pressure in the system. When the parts of the unit were worn out, the pressure in the highway falls below the norm, and little diesel fuel is injected into the cylinders.

Together with the fuel filters does not prevent Check and air. Pull the polluted element if it is not possible to change immediately.

Ignition faults

In cases where, when you press the gas pedal, it is heard to the exhaust pipe either the engine begins to "trot" at idle, try to find a problem in the ignition system. Weak sparking on candle electrodes leads to incomplete combustion of the fuel-air mixture and power loss by a power unit. The reasons for the improper operation of the system look like this:

1. Problems with one or more high-voltage coils.
2. The insulation of high voltage wiring, coming from coils to candles.
3. Due to the long period of operation, the candles were worn out.

Cunning of worn candles is that in the process of tests they give a normal spark. But in the motor cylinders there is a high pressure, in which old candles fade. That is why the engine does not develop revolutions, and the sharp pressing of the accelerator pedal causes the "failure". Checking the candles is necessary on a special stand that creates no less than 20 bar.

Diagnose the trigger of high-voltage wire or insulation of the candle can be in a dark garage. Open the hood, boot the motor and watch it. If you notice the flashes of the sparks on the cradle, put new parts.

The exhaust of the coil or the cutting of the high voltage wire indicates a complete refusal of one of the cylinders. Testing the wire is easy: change it places with the neighboring and make sure that another cylinder stopped working. With the coils, this reception will not pass, for diagnostics you need special equipment.

Problems with engine

The critical wear of the cylindrophone group of the power unit also leads to a reduction in power. There are other reasons why the engine is badly gaining momentum:

• valve exercise in one or more cylinders;
• no compression or its fall below the permissible level;
• improper adjustment of heat gaps between the rods of valves and rocker;
• problem or chain drive of the gas distribution mechanism.

Most of the listed faults are detected by measuring compression. The burned valve does not completely sit in the nest, which is why the pressure in this cylinder drops to 2-3 bar, and sometimes to zero. The overall decrease in compression in all cylinders to the mark of 9 bar and less points to "stepped" piston rings.

Council. Before you announce the verdict with a cylindropional group, it is worth checking the thermal gaps with a dipstick. If a recently some "specialist" made irregular adjustment and clapped the valve, then the compression will also decrease.

Such errors occur when replacing the chain or timing belt, when the labels are shifted to 1 tooth. Consequences - Violation of the phases of gas distribution and power loss plus unstable operation of the engine. With such an effect, there are negotiable drivers who do not follow their own machine: from wear chain (belt) is very stretched and jumps on the gear of the camshaft by 1 tooth.

Too high oil consumption penetrating in the combustion chamber through valve glands, also worsens the conditions for the operation of the power unit. From the inside the walls of the chamber and the electrodes of the candles are covered by nagar, and the piston rings are covered and locked. The correct sign of the malfunction is the Clubs of the Size of the exhaust pipe.

Other malfunctions

The modern car is equipped with an electronic system of controlling the power unit and the neutralization of flue gases. Since the technical condition of these systems does not directly affect the operation of the engine, the power loss may occur for such reasons:

• destruction and complete obstruction of the catalytic neutralizer installed in the exhaust path of the gasoline motor;
• the clogged diesel filter leads the same consequences - the exhaust gases have nowhere to go and the power unit "suffocates";
• the failure of one or several sensors associated with the electronic control unit.

Checking the passability of the neutralizer and the particulate filter is simply performed: unlock the front flange of the device by opening the way the exhaust gases and start the motor. If its work is significantly improved, change the catalyst to the new or.

When the lambda probe fails, the engine does not gain momentum on the controller command. Not "seeing" the amount of oxygen at the output, the electronic unit cannot be properly prepare the fuel-air mixture, so it turns into an emergency mode. The mixing of fuel with air occurs according to the established indicators, which reduces the power of the motor.

The transition to emergency mode is accompanied by the inclusion of the CHECK ENGINE scoreboard on the dashboard. The fault happens whenever it fails one of the main sensors - DMRV (in new cars - DDA), lambda probe or the sensor of the throttle position. To check the performance of these devices, it is better to refer to a competent auto electrician or per service station.

For each motorist, it is important that its vehicle worked properly, and without any problems it was able to develop their own optimal power. However, for a number of reasons, the power unit of the car over time can stop typing the number of revolutions necessary for its normal operation. In this case, the car will lose their former incision, and its traction qualities will significantly decrease.

Signs of trouble

Determine the lack of the number of revolutions is quite simple and each driver is able to distinguish the normal power of its car. The reduction in power is always accompanied by a deterioration in the dynamics, traction, weak acceleration, as well as high-leveling. Often, a car with this problem spends much more fuel, and exhaust gases may have either black.

A good motor always reacts to pressing the accelerator pedal and begins to develop more revolutions. If this does not occur or a tangible difference is not observed, then you should pay attention to both the engine and the fuel system.

As for the faults, due to which the power unit is not capable of typing the required number of revolutions, it is worth noting, there are quite a lot of them.

Insufficient heating of DVS

First of all, it is necessary to understand that the immense engine is unable to fully function. For this reason, before starting the movement, it is recommended to give the unit to work in idle mode for several minutes or start moving on a cold engine without rapid acceleration. But it is worth remembering that if the car is equipped with a carburetor engine, it is better to give preference to warm up than a gentle start. Otherwise, the movement may occur, and the motor can stumble.

If this system fails, it will not be possible for their own forces and should be visited by car service.

Carburetor Engine

In the case of a carburetor, everything is somewhat simpler - an angle is set exclusively in manual mode, scrolling the ignition distributor. It is quite difficult to install it quite difficult, but still possible.

If the ignition of the mixture occurs when the piston is in the upper dead point, the explosion of the mixture will occur when it starts downward. In order for this not, the ignition angle is adjusted. To properly set an angle, it is necessary to identify the compression tact in the first cylinder. To do this, you can take a piece of the rolling, and clog the cylinder candle hole. After that, the crankshaft scrolls for the crown and at the beginning of compression, the roller will fly under pressure. At the same time, the labels on the pulley and the frontal lid should correspond to each other. When the labels came together, it is necessary to pay attention to the rotor of the tramblor, it should be directed precisely on the contact of the first cylinder (the numbering of the cylinders is indicated on the lid of the trambl.). In the event that this is exactly the case, then the ignition angle is in order.

Further, when the error is detected, you must send the bottom nut locking the trambler. After that, slightly raising the battery, you should scroll the rotor until it becomes the first cylinder contact. By installing the rotor, the fixing nut can be tightened, but not to the end.

Now the ignition angle is adjusted. This is done as follows. Tester, or the control lamp is connected to the plus terminal of the ignition coil and to the "mass" of the car. Ignition turns on, and configuration begins. For this, the rotor is pressed with one hand, and the other slowly scrolls the vacuum knob clockwise, until the control lamp goes out. After in the opposite direction, the housing of the distortion is scrolled until the lamp ignition or detect readings on the tester. As soon as it happened, scrolling is completed, and the nut is tightly tightened. Thus, the ignition advance angle on the carburetor engines is adjusted.

The level of gasoline in the float compartment of the carburetor

In the process of forming the fuel-air mixture, the fuel limit in the carburetor float chamber plays a huge role. At a low level, the number of gasoline in the mixture is noticeably decreased, as a result of which the inability is unable to develop sufficient power. When the level of the high fuel mixture is enriched, but fully warm up before getting into the cylinder it is unable, which is also reduced, the rejection decreases.

In order to adjust the fuel level, it is enough to bend the fastening of the float in the desired direction to the required limit.

Problem in the accelerator pump and clogging of highways

When diagnosing, it is important to pay attention to the state of the accelerator pump, because it is due to its reliability, the engine responds to pressing the accelerator pedal. The jets located in the pump in the normal state should serve the fuel of a thin flowing.

Check it is quite simple. It is necessary to dismantle the air filter in order to open the first chamber overview. After that, you should open the throttle and keep it in such a state for several seconds. As a result, a powerful and thin jet of fuel will be released from the jetwork, which should be focused clearly into the second chamber. In case the trickle is weak or goes unevenly - the jetwork is clogged and requires urgent cleaning.

Air subcosition in the intake manifold

Among other things, the reason for a significant drop in the speed of the power unit can also be the usual air intake in the intake manifold. At the same time, the motor is badly started, troit, increases gasoline consumption, problems occur even at idle. This is due to the fact that excess air additionally penetrates into the fuel mixture.

Find out that the injection unit has ceased to fully develop the turnover for this reason is quite difficult, and even more difficult to find the place where the air passes. This is most often due to the depreciation of the collector laying. To check, you can abundantly cover the docking place of the collector fuel using a syringe throughout the connection perimeter. Next, the engine should be launched and if it turns out to develop normal turnover, it means that the problem is lifted here.

However, it is worth understanding that this method is quite primitive. For a full diagnosis of the intake manifold, it is recommended to visit the car service, because it is very difficult to do it yourself.

Violation of gas distribution

When the timing belt is broken, the phases of gas distribution in the unit occurs. It happens after it is replaced if the new belt was installed with a displacement of at least one crankshaft and camshaft gear. In this case, the cycle of the operation of the engine is violated, the consumption of fuel increases, and the exhaust acquires various colors due to the defective combustion of the mixture.

Due to the fact that the replacement of the belt requires certain knowledge of the engine, to entrust this procedure better by car service, and not attempt to set the cycle yourself.

Low compression

Perhaps the most serious problem due to which the engine power is reduced - reduction.

This happens when the details of the piston group are worn. The consequence of this problem is the loss of energy during the operation of the OI. Compression is checked by a compressometer, and if the indicators are lower than optimal, this problem requires the mandatory overhaul of the engine. The norm is considered compression within 10 - 14 kg / cm2, but for each car it is its own and indicated in the documentation.

The lack of engine speed when the gas pedal is pressed - the common problem with which most drivers faced. The reasons for this unpleasant situation are set: it can be like a transition from a gasoline engine to gas-ballon equipment and the simplest malfunction of the motor. Let's study the reasons in more detail.

The engine does not gain momentum when pressing the pedal of gas: reasons

First of all, it is necessary to pay attention to the "symptoms" problem: when it shows itself, how, whether there are additional signals indicating a malfunction. It is possible that the engine is fully working and properly functioning it interferes with a sensor disconnected when repairing. Fix such a malfunction can after a short inspection.

If the engine failures occur without any serious causes - careful diagnosis is required.

Let us dwell on more for the reasons that the owner of the car can fix it.

The key factor of reliable engine operation is the quality of the fuel mixture, the features of its admission, fire and burning in the working area of \u200b\u200bthe motor. Violation of any of the above processes leads to problems with engine turnover. That is why in the failures in the DVS, the first thing to pay attention to is the operation of the fuel and oxygen system.

1. If the air filter accumulated dirt, a mixture of oil and sand, the air will penetrate the engine unevenly, which will lead to loss of motor power and, accordingly, to "missed" turns.

2. Violation in the operation of the intake system leads to an excessive air suction. A failure may arise suddenly, and can go to chronic stage. The flow of a large amount of air is impoverished with a mixture, it becomes too little flammable vapor. The motor in this case starts, but during the trip the car can not dial the necessary revolutions.

3. Lack of fuel in the engine. This problem is most often manifested due to filter clogging. Fuel is enough to start the motor, but it is not enough for a normal ride. As a result, the car twitches, poorly listens to the gas pedal. During the set of revolutions, the so-called "failures" are observed.

4. Mud accumulation on fuel pump filter. The filter is a small mesh, when oil deposits hit on it, the pressure increases in the system, a sufficient amount of fuel does not flow into the combustion chamber. When the fuel pump filter is contaminated, the engine begins to work with interruptions in almost all modes. When you try to gain traffic turnover, you can simply stall.

5. Ignition Candle Problems or Wiring, resulting in problems with flammable mixture. In this case, fuel is not flammable, the engine loses its power, and the system is not capable of gaining momentum. Candles can be grilled, mud can accumulate on them. Among the common causes of interruptions in the work of the spark plugs are damage to the casing and the incorrect installation of gaps on the electrodes.

6.
Open electrical wires connected to ignition candles. In this case, the engine troit, starts "times", the turnover of the engine is gaining with great reluctance.

Correction of these problems is not distinguished by complexity: it is necessary to check whether candles and wires sparkle; See the level of pressure on the pressure gauge fuel ramp; Remove the oily flare and dirt from the air filter; Change the filter to clean the fuel to the new one; Clean from mud sediments a gas-pump mesh, etc.

Engine turnover can fall for more difficult reasons, which will not work independently, as the repair requires special knowledge, experience and availability of diagnostic equipment.

Without the help of the car service can not do if:

1. Failure in the phases of the gas distribution mechanism of the car. If the engine was impaired in the engine, the fuel intake and the release of exhaust gases pass unevenly, the valves open with interruptions. Such a problem often occurs after poor-quality replacement for replacing the gas distribution mechanism belt, with improper valve adjustment, failures in the operation of the gas distribution phase shift system and the failure of the timing chain.
2. Violation of coils or ignition module. The main "sign" of this problem is the engine begins to told, ignition skips in the cylinder system are observed, the number of revolutions decreases.
3. Failures in nutrition injectors. Most often, the cause of this malfunction is bad wiring. Electric signal does not reach the nozzle or reaches it not on time. Naturally, in such conditions, the nozzle cannot work correctly, because of which the fuel is flammable in the cylinders unevenly, the engine power drops along with the number of revolutions.
4. Problems in the work of the gas station. Unpleasant breakdown, developing slowly, but inevitable. As a result, the pressure being created is not enough to work the engine: the motor will stall.
5. Dirt hit to the injector. This problem can cause the use of poor-quality fuel and contamination of nozzles. The nozzles are recommended to be cleaned after 35-45 thousand km. Run.
6. The unsatisfactory state of systems responsible for the output of gases, first of all, the USR, soot filters and catalyst. The engine remains a large amount of carbon dioxide and gain in such conditions the required number of speeds motor is not in a state.
7. The failure of the instruments of the electronic control system of the DVS, leading to a change in the composition of the combustible mixture.
8. You can not exclude the breakdown of the electronic control unit. This trouble may occur after poor quality firmware repair. The main problem of problems in the ECU is a hoppy operation of the engine, an unexpected amplification and a drop of torque.

A timely carried out uncomplicated service procedures like cleaning the injector, replacing candles or filters - excellent prevention of any engine problems.

For a car on a gas, the key value is played correctly adjusting the motor and fuel supply systems.

One of the signs of engine malfunction is usually the fact that the engine is not gaining momentum ("not unwound", as many motorists say). The reasons for the fact that the engine is badly gaining momentum, can be a lot, the exact diagnosis can only be delivered by an experienced diagnostic, but the initial check can be carried out independently. So, for what reasons, the engine is not gaining momentum?

The engine is not gaining momentum. What to check first?

Fuel supply system. Usually, the reasons for which the gasoline or diesel engine does not gain momentum begin with it. If we are talking about a gasoline engine, then in the first place it is necessary to check the serviceability of the fuel pump - it does not matter, it is mechanical or electric.

Diesels are tested from equipment with nozzles, because it is most often the cause of power loss by the engine. In addition, the likelihood of air suction in the fuel system should be excluded.

Like gasoline and diesel engine stands as he could score and influence the engines.

Ignition system. To start, check whether the engine does not trite. Then remember whether the belt or the timing belt has not changed. Very often, the belt or the timing chain is installed incorrectly, which is why the engine does not gain momentum and "tupit".

In addition, it should be carefully examined by wires and candles to make sure of their integrity and health. The engine craving can also influence the failed sensor (DMRV, DHX, the crankshaft sensor, the camshaft sensor, the throttle position sensor, etc.).

Air supply. Another common reason for which the engine is not gaining momentum is the air climber on the way of fuel-air mixture into the cylinders. In addition, it follows.

Exhaust system. Many cars significantly affect the thrust, so that the exhaust system is checked from the catalyst (if it is).

Another very common reason why the engine is not gaining momentum is bad fuel. If you refrain on an unknown refueling, perhaps the problem is precisely as fuel.

If all of the above is normal, then for a more detailed study, it is better to refer to the specialists who can accurately determine the cause of the fault.

Reducing the number of engine speed significantly affects its capacity and traction qualities. If suddenly your car has lost its former increasingness, it is worth thinking about his diagnosis, because such symptoms do not feel anything good.

In this article we will talk about why the engine does not develop turnover and what it can be connected with. We also consider the probable reasons for the loss of power by the power unit and the methods of eliminating them.

Signs of malfunction

It is not difficult to determine that the engine does not develop the revolutions that it should develop is not difficult, especially if you have traveled by car and know its native characteristics. Those drivers who encountered in their practice with a similar problem know that the reduction in capacity is characterized by sluggish acceleration, loss of dynamics, thrust, as well as motor overheating and increased fuel consumption. Sometimes these processes are accompanied by exhausts of the SIZOB or even black.

You press the accelerator pedal, and the engine does not develop turnover? Pay attention to the tachometer. A good motor must instantly respond to an increase in the amount of fuel being supplied in the combustion chamber by increasing the number of rotations of the crankshaft. And if this does not happen, you need to urgently look for a malfunction.

Main reasons

The reasons for which the engine does not develop turnover may be very much. Here is the list of the most common of them:

• the power unit does not warm up to the operating temperature;
• low or, on the contrary, excessive fuel level in the float chamber;
• faulty accelerating pump;
• clogging of jets, carburetor channels;
• air seats in the intake manifold;
• incorrectly put the ignition advance angle;
• violated phases of gas distribution;
• violated spark plugs;
• clogging of the air or fuel filter;
• malfunction of air flow sensors, crankshaft position, throttle position, detonation;
• insufficient compression in cylinders, etc.

As you can see, the list is quite voluminous, although it is impossible to call it in any way. Consider the listed faults in more detail.

Cold Engine

It will be wrong to require full power from the power unit until its temperature reaches the working indicator (90 0 s), especially when it comes to a motor with a carburetor injection. The cold engine does not develop the momentum fully, even with a completely closed air damper. The fuel mixture before hitting the combustion chamber must be heated. Otherwise, the car will "twitch", and the motor should be chopped and detonated. So, if your car is equipped with a carburetor engine, do not hurry to leave until it warms up.

Fuel level in the float chamber

The level of fuel in the float chamber is also able to affect the operation of the power unit. If it is lower, the gasoline concentration in the combustible mixture is reduced. Because of this, the engine does not develop power. With an overwhelmed level, the mixture, on the contrary, is too enriched, but there are more norms in the combustion chamber. Before hitting the cylinders, she does not have time to warm in the intake manifold, which leads to the emergence of detonation and loss of revolutions.

The level of fuel is regulated by sweeping (bending) fastenings of floats.

Accelerator pump, Channels and carburetor jets

Continuing the theme of the loss of the power of the carburetor engine, it is impossible not to mention the accelerator pump. It is from its serviceability that the response of the power unit for pressing the accelerator pedal depends. Most often, the problem is to supply fuel, and to blame for this "nose" of the sprayer, through which gasoline is supplied with a thin jet. To check the performance of the carburetor accelerator pump, it will be necessary to remove the air filter to see the view of the first chamber. Next you need to open and hold it for a few seconds. At the same time, a thin (about 1 mm) stream of fuel, directed precisely into the second chamber should be pulled out of the "nose" of the accelerator. If the jet is a low-power or curve is a sign of clogging of the sprayer, jags, the valves of the accelerator pump. This problem is solved by cleaning them.

Air subcosition in the intake manifold

Another reason for which the engine does not develop, can be a banal air seats in the inlet of the collector of the force aggregate. The symptoms of such a malfunction are the difficult launch of the motor, its "Trojection", problems with an increase in fuel consumption and, of course, loss of revolutions. This is all due to a sharp depletion of the mixture due to unaccounted air falling in the combustion chamber.

Most often, the depressurization of the system occurs due to wear of the intake manifold laying. Determine that the injection engine does not develop the turnover due to the air supply is quite difficult, as not easy and find the place of depressurization. It is better to entrust it to specialists. But something can be tried to do it yourself. It is possible, for example, to take a syringe with a needle, fill it with gasoline (or solarium for diesel units) and handle the fuel of the reservoir connection with the motor around the perimeter. If the gasket between them came into disrepair, then gasoline will be sucked in the combustion chamber. If, running the motor, you will notice positive changes in its work, you can be sure that the reason lies in the sizes.

Incorrect ignition advance angle

It often happens that unlucky car owners, asking why the engine does not develop turnover, forget about the moment of ignition, although it is he plays a crucial role in the work of the power unit. It depends on the timely ignition of the fuel mixture in the combustion chambers. If the ignition advance angle is incorrectly, you never have any means and methods will achieve the coordinated work of all engine systems and mechanisms.

In the injector power units, the corresponding sensors correspond for the correct moment. Their work consists in collecting information and transfer it to an electronic control unit, which in turn regulates the angle. There are no such sensors in the carburetor engines, so the ignition is set manually by scrolling the upper part of the ignition distributor.

Install the correct angle independently and without special equipment is not easy, although it is possible. At the maintenance stations, a special stroboscope is used for this, with which a specialist determines the position of the label on the crankshaft at a certain position of the distributor.

Violation of gas distribution phases

Violation of the phases of gas distribution usually occurs when the timing belt is cut or when it is replaced. Allowed an error in the form of a shift at least one "tooth" between the crankshaft gears and the gas distribution mechanism, you will receive a real problem in the form of an unstable engine operation, an increase in fuel consumption, color exhaust and other troubles.

In order not to get into a similar situation, work on and repairing all elements associated with it should be carried out at maintenance stations. Well, if there is no such possibility, it is necessary to carefully check and recheck the correspondence of the labels on the GEM gears, crankshaft and flywheel.

Gaps between electrodes

The next reason why the engine slowly develops revolutions or does not develop them at all, it may be wrong for itself a normal machine with a normally operating engine, but you didn't like something, and you decided to change the candles, but did not read the recommendations of the manufacturer's factory. An error in the gap for one tenth or hundredth of the millimeter will certainly make negative adjustments to the engine operation. Depending on its increase or decrease, it may be difficult to launch, loss of traction qualities, reduction in power, fuel reservoir, etc.

If it came about the gaps, it is impossible not to mention two-way engines. For them, candles are one of the most important elements that ensure stable operation of the motor. So, if the turnover does not develop, the first thing should be checked the state of the electrodes and the compliance of the gap to the recommended indicators.

Air and fuel filter clogging

Whether once again say that the filters need to be changed every 7-10 thousand km of mileage, and in particular operating conditions twice as well. Pollution of these elements causes difficulties with fuel or air to the collector and leads to a violation of the normal operation of the engine. The lack of normal fuel pressure in the fuel line becomes the cause of depletion of the combustible mixture, and when there is a problem with the supply of air, it takes place. And in the first, and in the second case, the engine "chips", overly heats up, loses power, turnover, consumes more fuel.

A similar fault is eliminated by replacing the filter elements.

Fault sensors

In comparison with the carburetor, the injection engine wins due to the fact that its work is controlled by electronics, and when any problems occur, the driver learns about them by an error signal on the control panel. He will only have to connect the tester and read the code to determine which nodes failed. This is due to electronic sensors controlling the operation of the main systems and mechanisms. But they are not eternal.

If any of them refuse to work, the engine goes into an emergency mode. Due to the fact that the electronic unit ceases to receive the necessary information, the operation of the power unit becomes unstable.

Insufficient compression

Well, finally, the most unpleasant fault that leads to a decrease in revolutions and the loss of engine power is insufficient compression. It is a consequence of the wear of the details of the piston group or location (clogging) piston rings. As a result, the pressure in the combustion chambers is reduced, and a portion of the energy from the combustion of the combustible mixture is simply lost.

Compression is measured using a compressometer. Its normal indicators, depending on the type of engine, can vary from 10 to 14 kg / cm 2. Having found a similar problem, you should think about the engine overhaul.