During the operation of the car, owners are faced with uneven engine operation - the so-called triple. At the same time, power disappears, fuel consumption increases, extraneous noise and vibration appear in the motor. For many, and especially for beginners, tripling is not clear. Let's see what the engine means, what are the causes of this phenomenon, as well as what could be the consequences and how to solve this problem.
What does it mean?
Many cars are equipped with four-cylinder engines. Often there are situations when one of the cylinders fails. In this case, the engine is forced to work on the remaining three cylinders. Hence the expression - the engine is troit.
This malfunction is associated with incorrect operation or the complete inoperability of one or several cylinders in an internal combustion engine. That's what it means - the car is troit.
Key features
It is important to properly diagnose a breakdown. After that, the problem will be localized and competent repair of the power unit will be possible. As for the effect of tripling, it is necessary to know the main signs, as well as the main reasons.
We already know what troit means - this is the failure of one or more engine cylinders. Not necessarily this is due to the failure of the cylinder. For some reason, the mixture of fuel and air does not ignite inside the combustion chamber, the ignition is delayed or the fuel mixture does not completely burn.
During engine idle operation, malfunctions are clearly audible and visible. They can be manifested by vibrations or twitching of the unit. Sometimes the vibrations can be very strong and even transmitted to the car body, steering wheel, gear knob. If in the case of the first symptom the problem can manifest itself only periodically, then in the second, even without diagnosis, we can say that one or more cylinders does not work.
Another sign is the loss of power when driving. The driver can feel the dips when you press the accelerator pedal. Acceleration can take place not smoothly, but in jerks. In this case, fuel consumption may increase. On the injection power units, a light may come on , indicating engine malfunctions. These symptoms can occur for many other reasons, but these are the main signs that the engine is troit. So the car needs to be checked carefully.
Other symptoms
Often, tripling can be determined by jumping speed at idle and under load. Oscillations of revolutions can be both in a small range, and quite serious.
You can identify problems with spark plugs - they will be covered with dry black coating. We know what the motor means, but in this case, a raid will not always speak of a faulty cylinder. Sometimes the cause of the plaque is the candle itself. Even after replacing them after a short time, soot will form again, since the cause of such unstable operation has not been eliminated.
Detection is determined by the sound of the exhaust. Instead of the usual and rhythmic work, the engine will work jerkyly, which is well audible from the exhaust pipe. These jerks can be felt on the body - it will vibrate.
If at least one of these symptoms is detected, then a quick diagnosis should be made. You need to find out if the problems are directly related to the engine or if the failure was caused by related equipment. If you ignore this, then very soon the motor can seriously fail and it will require complex and expensive repairs.
Key reasons
What does it mean to drive an engine, we already know. After learning about this problem, many people want to know why this happens. In fact, there can be a huge number of reasons. Diagnostics can require a lot of time and effort. But we can identify the main reasons that most often lead to unstable engine operation.
One or more cylinders may not work due to a malfunction in the ignition system. This happens most often. Functionality in the fuel system and fuel supply devices may also be impaired. Another popular reason is low compression in the cylinder due to the natural wear of the piston-cylinder group.
During the diagnostic procedure, all causes should be excluded. This will significantly save time in subsequent repairs.
How to identify a broken cylinder?
For repairs, it is important to find out which cylinder is not working. For this, experienced motorists recommend an old and proven method for years. It consists in the fact that spark plug wires are removed from each cylinder in turn .
For such a check, it is necessary to find some basis on which one can stand and which does not conduct electric current. It can be a rubber mat or a wooden board. Then the engine is started, and the revolutions are kept within 1500 rpm. After they take the wire and disconnect it from the candle. If the engine changed the sound, then everything is in order with the cylinder. If the sound has not changed, then this is the idle cylinder.
Candles and wires
If the motor is troit, what does it mean? This suggests that one of the cylinders is not functioning. Among the reasons, possible problems in the ignition system were indicated. Consider this point in more detail.
Can I drive a low mileage powertrain? Quite possible. It is this thought that should come to the mind of a normal motorist in the first place. Also, a late or too early moment of ignition, a weak spark, leads to the problem. Drivers are advised to remove the candles and check their integrity. If during the visual inspection it was possible to detect damage to the insulator, then the candle must be sent to the trash.
Nagar, as already discussed above, can also talk about the problem. A too rich mixture enters the combustion chamber . A thick layer of soot leads to interruptions in the operation of the candle. Among the causes of these interruptions - the engine often overheats, the cylinder has a low compression ratio, the timing belt jumped, there are problems with the fuel supply equipment.
If the motor started, as they say in jargon, to triple (which we have already figured out - to work on three cylinders) on a cold engine and could not find any problems with candles, then it is recommended to visually check the condition of the wires. This effect can be observed with high humidity. If the integrity of the high-voltage wire is violated, then this will lead to triple. But as you warm up, the symptoms disappear. If the engine runs on three cylinders for hot, then you need to look at the condition of the cylinders and piston rings.
Air supply system
One of the popular reasons is a lot or a little air in the intake tract. The system may lose tightness, due to which the motor will suck in excess air. Check the air supply system in the garage.
For diagnosis, block the air inlet pipe near the air filter. Then they pump air? This is necessary in order to create pressure. If it falls, then there is no need to talk about the tightness of the system. Look for a place where there is a leak. Insufficient air may be due to a clogged air filter. It is better to change it. After that, the engine should start working normally.
Motor problems
In order for the engine to work normally and efficiently burn a mixture of fuel and air, the combustion chamber must be closed at certain points. If damage to the cylinder-piston group or the gas distribution mechanism occurs inside, this will necessarily entail malfunctioning the timing. Then the tightness will be broken.
We know what the engine means, and the cause of the cylinder failure is simple. The piston cannot compress the mixture to such an extent that it normally ignites. The underlying piston rings, burnt valves, and scuffing in the cylinders lead to this.
To determine the problem, you need to measure the compression of the cylinders. If in one of them the indicator is below the norm, then motor oil is poured there with a syringe. Next, the compression is measured again. If the indicators have risen, then this indicates that there are problems with the cylinders and pistons. If no changes have occurred, then the valves or cylinder head are out of order.
Can i ride?
In addition to driving discomfort, the effect of tripling can lead to more serious damage. The combustible mixture will be fed into the cylinder. Gasoline will then settle into the crankcase and fall into the oil. The latter will become more fluid and lose its characteristics. The engine will run under heavy dry loads. Therefore, if such a problem occurs, you should find the cause and eliminate it. Moreover, we know what this means: the engine is troit.