Black smoke
Car body performance:carThe engine shakes a lot,exhaust pipeThere is an abnormal sound, and a black smoke body is discharged at the same time, and it feels weak when accelerating.
The cause of the failure: the phenomenon of exhausting black smoke isCarburetorIt is more common in cars. This is because the fuel injection volume of carburetor models is not controlled by the computer, but controlled by the pedal accelerator. In some cases, too much fuel enters the cylinder and is discharged out of the car before it burns. This causes The black smoke we saw.
There are many reasons for the failure of the black smoke. If it is the black smoke from the carburetor car, the reason is more complicated. For example, during a cold start,Spark plugWork is not good, it takes a long time to playmotorIt can be started, so that the mixed gas accumulated in the cylinder cannot be completely burned, and black smoke will naturally be emitted; or the ignition time of the vehicle is not correct, and it will also cause black smoke to be produced in advance or after the wrong time.
EFI vehicles generally emit very few black smoke. If black smoke does come out, it is mostly a malfunction in the cylinder. "Broken cylinder" is a common one.
Solution: 1. Carburettor cars are basically old now, and the aging degree of carburetor and other parts should be checked frequently. Carburettor cars are different from EFI cars, and they need to be maintained and adjusted frequently to develop good use. Car habit. 2. EFI vehicles need to check the cylinder line every 30,000 kilometers and the spark plug every 10,000 kilometers. If there is a problem, replace it in time.
White smoke
Car body performance: It can be seen that a large amount of white water vapor emerges and the engine is not running smoothly. Even if the engine is warmed up to the normal working water temperature, there is still a large amount of water vapor emerging (except in winter).
The cause of the fault: the white smoke may be caused by the wear of the cylinder gasket of the engine cylinder, which creates a certain gap, which causes a large amount of water in the heat dissipation system to enter the combustion chamber. Water cannot be burned. When heated, water vapor is generated, which is directly discharged from the exhaust pipe.
Solution: 1.Check the engine block and cylinder head gasket for damage, checktankWhether there is stagnant water inside. 2. Check the car manual and add gasoline with the correct label in strict accordance with the manufacturer's regulations.
Blue smoke
Car body performance: The vehicle's explosive power is reduced, acceleration is weak, the noise becomes louder, blue smoke is emitted from the exhaust pipe, and it is accompanied by a burnt smell produced by the burning of organic oil. By checking the oil dipstick, it will also be found that the oil consumption is too large. Normally, after each maintenance, after 750 kilometers of driving, the oil consumption should be within the normal range, and there is no need to replenish it midway.
Cause of failure: Blue smoke is mostly caused by the internal failure of the engine, which causes the oil to escape into the combustion chamber and burn. There are generally two common situations: the inner wall of the cylinder is scratched,pistonPoor sealing orValveSevere wear and tear will cause gaps, and the oil originally responsible for lubrication will enter the combustion chamber through these gaps to participate in the combustion. When the incombustible oil is discharged out of the car, blue thick smoke is produced.
In addition, overfilling of engine oil can easily lead to burning of engine oil.Some car owners mistakenly think that the more oil the better, but they don’t know that excessive oil will also be brought into the cylinder for combustion, resulting in oil burning; at the same time, excessive oil will also blockCrankshaftThe normal operation of the arm allows it to do extra work and increase energy consumption.
Solution: 1. For older vehicles, check the tightness of cylinders, pistons and other components frequently, and go to the maintenance station to repair them in time when blue smoke is found to prevent greater losses. 2. The oil should be added in an appropriate amount, too much or too little is not advisable. Check the oil usage regularly. Once you find abnormal oil consumption, go to a professional repair station for inspection immediately.
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