Home Chassis VAZ 21 07 heats up starts to told the reason. Troit engine - causes and ways to eliminate. Engine TROIT only on cold

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VAZ 21 07 heats up starts to told the reason. Troit engine - causes and ways to eliminate. Engine TROIT only on cold

Engine TROIT (engine trimming) - the definition under which should be understood as a malfunction, when one or more cylinders do not work partially or completely. If you say otherwise, the process of combustion of the fuel and air mixture in individual cylinders is disturbed, which causes unstable work Motor at idle, under load and in transition modes.

The engine testing is manifested in the form of reinforced vibrations of the power unit, the engine significantly loses its power. Ignition passages may be observed, which are accompanied by strong cotton in exhaust system. The motor can trim both occasionally and constantly, only at idle or under load, on a cold, hot, etc. Next, we intend to answer the question of what engine troops are, as well as consider the main reasons why the motor begins to trim.

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Why motor starts troiting

Let's start with the fact that the engine testing is a violation of the combustion of the mixture in the cylinders, which is accompanied by a clear increase in vibration. Note, the appearance of DVS vibrations is not necessarily a trottery, since there are a number of other reasons why the engine vibrates strongly.

In the list of major malfunctions, resulting in the engine Troit, marked:

submitting insufficient or excess number fuel in the cylinder;
supply of insufficient or excessive air;
faults of the ignition system ,;
wear or motor breakage, which is accompanied by a decrease in compression;

In other words, the engine begins to trim as a result of an inappropriate composition of the fuel and air mixture, late ignition of the mixture or lack of opportunity to set fire to the charge, as well as violations of the conditions of normal combustion of the mixture as a result of mechanical wear or versions of the engine itself.

Based on this data, you can narrow the search for the search and number of systems for diagnosis. You should start checking from and the injector, then the air supply is then checked. In some cases, the engine trimming can also be the result of a failure of one of the sensors.

Engine Troit: Violated ignition of fuel and air mixture

Most frequent causewhich makes the motor troce, is later or early ignition, as well as a weak spark of spark plug. At the initial stage, unscrew the spark plugs for a detailed inspection. If the insulator damage or other defects are noticeable, then the candle should be replaced.

In the case of a damaged insulator, the place of damage is clearly visible, since this area is black. You should also pay attention to the state of the central electrode and estimate the gap of the side electrode.

In this case, it is necessary to measure the compression in the engine, after which the unit is disassembled for detailed diagnosis and repair. At the end, I would like to add that the operation of the motor with a non-working cylinder is prohibited, since riding with such a malfunction leads to the emergence of a number of additional problems, which greatly complicates and makes more repairs more expensive.

Why did the engine start tall?

If the engine started taking and does not work one of the cylinders, we will hear Obviously distinguishable and uniform "bu-bu-bu ...". When this happens - it causes additional problems, because the engine begins to wear quickly.

Because of this decreases engine compressionCreated good conditions To create scaling on the cylinder mirror, on the pistons. The engine begins to work in a different temperature mode, begins to overheatbecause the oil also serves to remove heat from moving parts, and the fact that already in the crankcase is difficult to call engine oil.

At first glance, the definition of this malfunction is simple. But sometimes it turns out that it is checked, everything seems to be fine, and the engine is still "Troit". Therefore, according to items we will try to disassemble the procedure for diagnosing in an ordinary garage where there are no special devices in order to look inside the engine and accurately determine the reason why the engine began to tackle.

Blame spark plugs?

To begin with, fill the candle from the cylinder and carefully examine it. What will we see? If the engine works normally and correctly, the color of the side electrode and the insulator will be light and slightly brown. Such a candle should work. If we see the chicar of black on the electrode and the insulator of the candle - this is the reason for which the engine can start tall. It is enriching fuel or dropping oil.

Because of Nagara, the ignition candle may not work or work irregularly, because it prevents the normal flow of sparking. The causes of Nagar can be:

long work engine at idle and in warm-up mode

reduced compression in the cylinder,

displacement or violation of the phases of gas distribution,

incorrect operation of the injector (nozzles),

incorrect operation of the oxygen sensor.

Next, we will transfer the view on the ignition candle body. It should be white and it should not be vertical black stripes or black dots. The presence of this says that the candle is already breaking and will not work normally.

If visual inspection satisfied us, then check directly the spark itself when scrolling the starter. We insert the spark plug into the title of high-voltage wire, put on the motor weight and scrolling the engine starter look - the spark between the candle electrodes or not. If there is a good spark of saturated space between the candle and the mass of blue color - Everything is fine.

If the spark is the spark plug, it does not slip or scatters, but barely noticeable - this is the main reason why the engine began to told.

Inspection of high-voltage ignition wires

If everything is fine with Ignition Candles, then carefully consider each high-voltage wire separately . First, we will examine the tip of the wire inserted into the spark plug. It should be a monophonic and not having a fall on the inner surface and points outside

And the first and second suggests that this high-voltage wire worked in extreme mode (defective spark plug, increased gap in the ignition candle), which served this reason. If you don't pay attention to this color change within the tip of the high-voltage wire - then the wire will simply trigger.

To determine the status of "high-pass" measure resistance with a digital multimeter. Values \u200b\u200bcan be different on concrete Enginebut should not exceed 20 com. If one of the wires showed the resistance value significantly less than everyone else, it means it is faulty and the cause of interruptions in the operation of the motor lies in it.

It happens that convert high-voltage wires When one of the cylinders do not work because of this. This happens, because on the ignition coils, though there are numbers that denotes the number of the cylinder to which this ignition coil works, but not everyone knows about it or is poorly read due to dirt. On machines, the number of cylinders are written on the ignition distributor, it is necessary only to clean the covers from the dirt and everything will immediately be visible.

Injector fault or injector

The engine can trim due to the injector or malfunction of nozzles in cases:

Malfunctions of the injector itself (it is quite rare),

Due to the use of low-quality fuel or improper use "cleaners fuel system",

The nozzles are clogged and require cleaning,

Trimmed or closed the power chains or control to this injector.

If you failed to find the cause, you should use the engine diagnostics. If one of the sensors does not work, an error will appear. If it is not - it means the reason in the mechanical part.

Also, one of the reasons why the engine began to "trot" - maybe bad compound "Mass" with body Auto. There was a case when the mass was moved from vibrations and it turned out that the engine began working with interruptions, because There was no reliable contact. After pulling all the connections, the motor earned without interruptions.

Before starting to seek the reasons for this problem and find out what it can lead to, you need to figure out what the engine is troit. Otherwise, this phenomenon is called "Missing" and means interruptions in the work of one or more engine cylinders internal combustion. The term "Troit" is obliged to the appearance of four-cylinder. If one of the cylinders fails, only three work. As a result, the motor does not pull, it becomes especially noticeable when overclocking. Currently, the "Troit" may also have six- and even twelve-cycle force aggregateAlthough it is not entirely true from the point of view of the Russian language. As a visual allowance on the Internet, you can find a video of a tricking engine, where you can also find a video about what to do in such situations.

It is possible to understand that the engine has tried, it is possible for the changed sound of his work. Especially good is heard if you get up next to the exhaust pipe.

Other signs accompanying violations in the work, these are unstable turns at idle, body vibration, increasing fuel consumption and power loss (the engine does not pull). Since each of the accompanying features is characteristic of other problems, they need to consider them only in the complex.

To find out why the engine troits, you need as soon as possible, since the consequences of late repair can become so serious that it is ultimately a motor assembly.

Why engine Troit

At first glance, the causes of the problem lay on the surface: either in the cylinder there is nothing to burn, or there is nothing to light the working mixture. However, it is only at first glance. In fact, to understand why the motor suddenly began to trim during startup or acceleration, it is very difficult, and the search for the root of evil can take away not one day, especially in garage conditions.

It is important to pay attention, under what conditions the motor does not pull when it begins to trim stronger: on cold or after warming up, when driving under load or at idle, on small or high, during acceleration or with uniform motion. A hint can be any trifle, often apparent not related to the point.

So, why does the engine troit? The main reasons that cause this malfunction are as follows:

incorrectly exposed moment of ignition;
atmospheric air seats in;
defective spark plugs (the most common cause);
pierced high-voltage wires;
defective capacitor;
air seats in the intake manifold;
the mark of valves or pistons;
broken, worn or deformed piston rings;
violation of the phases of gas distribution;
highly worn rockers valve;
the squeak or breakdown of the cylinder head laying;
worn valve stem seals (hardened, punched or completely destroyed);
incorrectly adjusted carburetor;
worn shaft of the distributor of the distributor or the bearing of the rotary plate;
cracked air filter;
loss of tightness due to strain or wear of the membrane of the vacuum regulator of the ignition advance angle;
using spark plugs that are not suitable for its parameters to this motor.

Search for non-working cylinder

This task is no difficulty. The only thing that needs to be done is on a running engine alternately disconnect from the spark plugs of high-voltage wires. If you turn off the working cylinder in this way, the sound of the motor will change, if after disconnecting the tip, the sound remained the same, which means that the non-working cylinder is found.

Disconnecting high-voltage wires, care must be taken, because the risk of getting a blow is very large. This is not fatal, of course, but very unpleasant. First, under the feet you need to put dielectric material, such as a dry board or rubber rug. Secondly, you need to disconnect, keeping the wire itself, and not for the cap. Thirdly, it is impossible during the procedure to touch the car body.

Detailed analysis of the cause of engine trimming

Although the taking motor every time shows the same signs, it is much easier to solve the problem, if you know the peculiarities of this phenomenon. Above the main reasons for the failure of one or more engine cylinders were listed. Because of them, the motor does not pull on high revolutions, strongly troit on small, when starting, or acceleration, after heating or cold. Consider them in more detail.

Incorrectly exposed point of ignition

If the motor troit for this reason, then there is a kind of pattering, in which the engine jershits. To accurately establish this malfunction, you need to listen to the motor on small revolutions, because at high work it is aligned, and the passing of clocks become invisible. As a rule, the above-mentioned signs speak of an excessively early ignition. This is confirmed by jerks that make the engine when scrolling it by the starter.

Atmospheric air seats in a vacuum brake amplifier

If the car has a vacuum brake amplifier, air drums occurs when the diaphragm, hose or valve is damaged. The system appears an excess air that is mixed with a working mixture, her dinner. As a result, the mixture in the cylinder can not always ignite. The candle, in turn, wet and cannot form a normal spark that can set fire to the fuel and air mixture. This malfunction is quite difficult to identify, since special equipment capable of determining, in which place is disturbed by the tightness of the vacuum amplifier system, does not exist.

Faulty Ignition Candle

A concomitant symptom confirming the hypothesis that the reason for the ignition candle is the fact that the cold engine is stronger. After warming, the problem often disappears or becomes less pronounced.

After the problem cylinder is detected, you must unscrew the candle and inspect it. Ignition Candle - this is an indicator of the health of the power unit. Her condition can say a lot, and timely adopted troubleshooting measures will help prevent severe consequences for the motor.

First of all, attention should be paid to the color of the insulator of the central electrode. It is not difficult to determine the normally working candle. The normal insulator is light or slightly brownish. If the color of the insulator differs from normal, then you need to find out why. Traces of oil or Nagar on the insulator say that the cylinder enters the re-entered mixture, which fills the candle, or it "throws out" with oil. As a result, normal sparking is violated.

The reasons for this may be different:

the engine will remember at idle during warming;
faulty feed valve power supply valve;
low compression in the cylinder;
impaired gas distribution phases;
disorders in the nozzles;
the failure of the oxygen sensor.

After the insulator, view the candle housing. It should be whole, without chips and cracks. Particular attention should be paid to the presence or absence of vertical black stripes and black dots. If they are - the candle breaks through, and it must be replaced.

Finally, the quality of sparking is checked. Moreover, it is not enough to close the side electrode to the ground, so you can check only the performance of the candle. To understand how well the ignition candle works, you need to keep it at a distance of one and a half or two centimeters from the mass and turn on the starter. If a large spark of bright blue color is formed between the electrodes - the candle works fine. A weak spark or its complete absence says that the ignition coil or switch is faulty, or high-voltage wires have increased resistance.

On the Internet you can also find video from detailed instructions By checking the spark plugs.

Punchy high-voltage wires or condenser

In the case of a breakdown of high-voltage wires, the engine, as in the previous case, is usually troit on the cold. After warming up, the problem either disappears completely or becomes not so pronounced. Strong engine trimming on hot tests, as a rule, about other problems.

The easiest way to determine the test of high-voltage wires or capacitor is to monitor them in complete darkness when the motor is found. About the test show sparks. You can replace the condenser and wires, in whole or in part. Also, the health of high-voltage wires can be checked by measuring their resistance with a multimeter. In normal wire, it does not exceed 20 com. It should also be remembered that it depends on the length of the wire, so all wires will be different.

With visual inspection of wires, you need to pay special attention to their tips. They must be monophonic, without light gray plaque inside and without gray-brown dots outside.

Air subcosition in the intake manifold

This reason speaks of other problems of the power unit and is their consequence. The fistula arises either after repair due to improper assembly, or due to wear of the gasket. Under the load, the problem is usually enhanced.

Fitting valves or pistons

It is possible to identify this problem only by measuring compression with subsequent disassembly of the engine. Due to the greater complexity of the work, the engine check is carried out at the end of the subject, when everything else is already verified. Motor B. this case Troit is always: on cold, hot, under load and at idle.

Broken, worn or deformed piston rings

This malfunction occurs infrequently. You need to check in the cylinder. After measuring in the cylinder you need to pour a bit motor oil And make a new measurement. If the compression rose, it means that it is in the rings. This malfunction can lead to engine overheating, so it is necessary to eliminate it as soon as possible.

Incorrectly adjusted valve or strongly worn rockers

Due to improper adjustment of the valve ceases to open and close in a timely manner. As a result, not the entire volume of the working mixture fall into the cylinders, but not all the exhaust gases are removed. As a consequence - the motor begins to trim.

In addition, in the cylinder intensifies the formation of Nagara. The state of opening valves affects the state of rockers. If they are very worn, the valves also stop fully open or closed.

In the presence of this malfunction, the engine is stronger when heating. After warming up, due to the thermal expansion of parts, the gaps decrease, and the motor on the hot starts to work smaller.

Faulty rubber

It also happens that the cause of the tricky engine becomes a rubber, or rather, its wear shaft, sleeves or bearings of the rotary plate, all this leads to the appearance of a gap between the contacts and the passage of the clocks. Often, when heated, the motor troit less or stops talling at all. This is explained, as in the previous case, a decrease in gaps.

Crashing air filter

Due to strong contamination, the filter passes the worse than the air, which leads to disruption of the mixing formation (the mixture is converted). As a rule, the operation of the motor is normalized immediately after replacing air filter. Stronger engine It starts to trim on the cold and after warming up under load when he needs more air.

What to do first if the motor tried

Summarizing all of the above, you can make a small instruction on what to do when the symptoms of the rolling engine appear.

First of all, it should be noted when it starts to told: when starting, while cold or after warming up, on small or high revs, when overclocking or without load. It is important to take into account both in what cases the fault is more pronounced and only after that proceed to the search for the cause.

If the engine is stronger than the tricks when started or on the cold, start searching is needed from checking candles and high-voltage wires. If the problem manifests itself stronger after heating or under load, it is better to check the condition of the air filter at first.

The remaining possible reasons are better to check as work complications.

It is well known that the engine begins to trim if one of its cylinders stopped working. But the non-working cylinder is only a consequence of the problem, but why did he stop working? If the engine is carburetor, the cylinder does not work in two cases: or does not come to it fuel mixture, or no spark. Everything is definitely here.

However, the operation of injector and diesel engines is controlled by electronics, and, in this case, the cause of the problem does not always lift in the cylinder itself - it can be both in the cylinder itself and in electronic sensors. With a malfunction of a sensor, a cylinder can also stop working, and then the engine troit is on the cold or already preheated state. If the car is new, and the trottery appeared, it is better to immediately go to a hundred.

Signs of the non-working cylinder (engine trimming)

Almost each of the signs listed below, if you consider it separately, may indicate other engine faults or power units. Therefore, in order to diagnose exactly the engine's trim, you need all these signs to take into account in the complex (see video "Troit Engine on Cold" below).

1. Floating idle turns, the vibration is felt in the engine - this is just a sign of a non-working cylinder. A body vibration may be observed.

2. When checking the spark plug, it can be seen that some kind of spark plug darkened, and soot accumulated on it.

3. The sound of the exhaust has changed.

4. Both at low and high speed - the engine has a weak overclocking dynamics.

5. Increased fuel consumption.

6. Swim engine speeds, the tachometer arrow is twitching.

7. Rods with increasing speed.

What is dangerous engine troops?

Some drivers, by ignorance, at first are not particularly disturbed about the changed sound from the exhaust pipe and the vibration in the engine appeared in the engine, and in vain, because the consumption of fuel, when the engine troit (it doesn't matter, on cold or already hot), increases very much - on 50- 100%. Agree, the pocket is tangible.

In addition, the fuel mixture that has not burned in a faulty cylinder, adversely affects the catalyst, and also penetrates the crankcase and mixed with engine oil, worsening its quality.

Increased load falls on the crankshaft, cylinders and engine pistons, so the resource of the service of these elements is reduced. Thus, to identify and eliminate the cause of the engine's trimming time is very important not to bring the case to expensive engine repair.

Why does the engine troit?

1. Faulty spark plugs (Ignition Candle Checking).

2. Air seats: a) in the intake manifold, b) in the vacuum brake amplifier.

3. Valve burned, worn valve rockers.

5. There is a malfunction in the ignition system (how to check the injector ignition module, how to check the carburetor ignition system).

6. The membrane of the vacuum regulator of the ignition advance angle is deformed.

7. Improper triggering of phases in the MRM, due to the knocked out valve gaps (how to adjust the valve).

8. The air filter is clogged (change the air filter).

10. The bearing of the swivel plate has failed.

11. Faulty ignition distributor shaft.

12. Run the piston.

13. The carburetor is incorrectly adjusted (how to adjust the VAZ carburetor).

How to determine the non-working cylinder?

The serviceability of each of the cylinders is determined by the method of disconnecting from the spark plugs of BB wires. Dismantling additional equipment to access high-voltage wires, not required - they are under the hood, in sight.

Safety in working with high-voltage wires. Before the procedure you need to put a rubber rug under my feet. Hand should be taken for the wire itself, and not for his cap. Do not touch the body with a free hand and not lean to the body.

So, you need to disconnect the tip of the wire from the ignition candle and carefully listen to the sound of the engine. If the sound has changed, this cylinder works, and on the contrary - if it has not changed, it means that the engine troits precisely because of this non-working cylinder.

What if the cylinder does not work?

The simplest thing is to replace the spark plugs and wires, with this any driver can cope with yourself. Useful links to troubleshoot some faults are shown in the article above. More serious tasks, such as checking the fuel system, cleaning the engine and replacing its individual elements, should be performed by specialists.

Video: Troit engine on cold

Engine TROIT (engine trimming) - the definition under which should be understood as a malfunction, when one or more cylinders do not work partially or completely. If you say otherwise, the process of combustion of the fuel-air mixture in individual cylinders is disturbed, which causes unstable operation of the motor at idle, under load and in transition modes.

The engine testing is manifested in the form of reinforced vibrations of the power unit, the engine significantly loses its power. Ignition gauges may be observed, which are accompanied by strong cotton in the exhaust system. The motor can trim both occasionally and constantly, only at idle or under load, on a cold, hot, etc. Next, we intend to answer the question of what engine troops are, as well as consider the main reasons why the motor begins to trim.

Why motor starts troiting

In the list of major malfunctions, resulting in the engine Troit, marked:

supply of insufficient or excess fuel into the cylinder;
supply of insufficient or excessive air;
faults of the ignition system ,;
wear or motor breakage, which is accompanied by a decrease in compression;

Engine Troit: Violated ignition of fuel and air mixture

The most frequent reason that makes the motor troit is later or early ignition, as well as a weak spark of spark plug. At the initial stage, unscrew the spark plugs for a detailed inspection. If the insulator damage or other defects are noticeable, then the candle should be replaced.

If the engine is unstable, then such a phenomenon is called "Missing". For our ear, the word is overseas and not for everyone. Experienced motorists know what it is. Missing - ignition skip combustible mixture In one of the cylinders. More often drivers in this case say that the engine troit. In this article, find out which causes of the occurrence and what ways to eliminate the defect are possible.

Troit Engine: Major Causes

Engine Troy is accompanied by "Creation". The sound is completely distinguishable and recognizable. It is he who signals about the non-working cylinder. Engine temperature quickly rises. . The power unit is subjected to rapid wear. Therefore, it is important to determine why the engine troit and as soon as possible to eliminate the malfunction.

Spark plug

Checking high-voltage wires is required when diagnosing the engine when it troit. They should not be traces of breakdown. Candle tips must be clean without a car.

After visual inspection of the candles, check the high voltage wires. They should not be traces of breakdown: black dots and stripes. Due to breakdown, the current does not reach the candles. This defect is the following cause of the engine of internal combustion.

Independent check of wires will not cause difficulties. They are tested by the usual multimeter. It is necessary to measure the resistance of each wire.

Videos check wires

Check the wires by the device multimeter. Measure the resistance of each wire. It differs in different brands of the car, but does not exceed 20 com. Good wires have the same resistance. If one of them shows much less or more, then it is faulty and due to it troit a power unit.
Ignition module

The ignition module is often the third cause of the strength of the power unit. You can check it, but on special equipment and in the presence of experience. You should not test the module on your own.

Ignition Module Videos

Engine TROIT only on cold

There are cases when the engine troit on the cold. If you made sure that the candles and wires are in order, then check the ignition module. Without skills and sufficient experience, such a diagnosis should not be carried out.

You can get a shock or burn the module, the engine control unit.

If suspected that the engine's trimming occurs due to the malfunction of the ignition module, then refer to the help of specialists.

Injector fault or nozzles

Injector motor Troit in such cases:

Injector is defective, but this is very rare.

Spill bad gasoline Or misused the fuel system cleaner.

Clogging injectors.

The electrical power circuit nozzles has a break or closes.

Eliminate such faults will help the engine diagnostics and competent motorist. For self-inspection, the injector and nozzles need experience and special equipment.

Low compression

Troop the engine due to insufficient compression in the engine cylinders. The decrease occurs: when rolling the rings on the pistons, the valve burned. Some cars are allowed to adjust the valves. Incorrect gaps - the cause of the injection engine.

Finally

If the engine is torn, one or more cylinders do not work, do not rush to go to computer diagnostic. The scanner check will lock the ignition skip, but does not indicate the cause of the occurrence. The cylinder does not work - it is so obvious. Before riding the car service, check the candles and wires. They are most often guilty in the fact that the engine Troit.

Before starting to seek the reasons for this problem and find out what it can lead to, you need to figure out what the engine is troit. Otherwise, this phenomenon is called "Missing" and means interruptions in the operation of one or more cylinders of the internal combustion engine. The term "Troit" is obliged to the appearance of four-cylinder. If one of the cylinders fails, only three work. As a result, the motor does not pull, it becomes especially noticeable when overclocking. Currently, the "troit" can also have a six- and even twelve-cylinder power unit, although it is not entirely true from the point of view of the Russian language. As a visual allowance on the Internet, you can find a video of a tricking engine, where you can also find a video about what to do in such situations.