Why is there black substance in the exhaust pipe of automobile and how to deal with it?

Turbocharged engines have black ash and high engine temperature. It is normal for carbon deposits to be discharged from the exhaust pipe to produce black ash.

The causes of the problem may appear in the following points:

1. Spark plug aging.

2. Poor atomization of fuel nozzle will lead to insufficient combustion.

3. There is something wrong with the oxygen sensor, which leads to the rich mixture.

4. Ignition coil problem, ignition time difference problem.

5. The valve cover pad is aging and gas channeling occurs.

As long as the exhaust pipe does not emit black smoke, it is normal.

A variety of reasons, 1: The air filter is too dirty or even not ventilated, resulting in an incorrect air-fuel ratio. 2. The air tightness of the engine is not good, often accompanied by slight oil combustion. 3. Air flowmeter. Oxygen sensor. 4. Personal driving habits: the high-speed small throttle can't be opened, and there is not a lot of fresh air entering the combustion chamber, which leads to the imbalance of air-fuel ratio. 4. Except for the above diesel vehicles, it is normal for the exhaust pipe of diesel vehicles to have slight black ash.

Due to the special fuel injection mode and irregular cleaning of the oil circuit, the direct injection vehicle will produce a very black exhaust pipe. We should pay attention to this problem. Long-term blackening will lead to a large amount of carbon deposition, which will burn engine oil in the long run and cause great losses. As long as fuel treasure is used to clean the exhaust pipe of the lower oil circuit, it will become metallic. Of course, there are many kinds of fuel treasure, including pea, PIBA and pea +PIBA. It is recommended that you use the fuel additive of National Six and clean the oil circuit with the oil tank.

What is the reason for the black ash in the automobile exhaust pipe? The main reasons for black ash in automobile exhaust pipe are:

First, it may be that the cylinder pressure of the car is too low, resulting in incomplete combustion. Incomplete combustion of gasoline will produce black smoke, which will be discharged from the exhaust pipe.

Second, there are problems or failures in the automobile ignition system, such as spark plug leakage, weak high voltage or weak flashover, and so on.

Third, because the quality of the gasoline used is problematic or too poor. For example, oil is mixed with crude oil such as benzene.

Fourth, the air filter is blocked, which leads to excessive mixture or insufficient oxygen, which leads to incomplete combustion.