Automobile exhaust is the biggest factor in air pollution, in daily use the car, there may be too many people do not pay attention to their own car exhaust? However, the exhaust also contains more colors of automotive information in it, we can color from exhaust or OBD diagnostic tool to determine the car whether have problem. Look at the different colors represent exhaust what kind of information it.
If you find smoke coming from the car, there may be a cylinder head gasket or engine damage caused by low temperatures. The former due to the cylinder head gasket is damaged cooling fluid into the combustion chamber, not only reduces the quality of the mixture, and the exhaust pipe into steam white smoke, then the need to replace the gasket; while the latter is due to the engine is cold the combustion chamber, with drops of water on the inner wall of the intake manifold, etc., together with a mixture combustion exhaust white smoke. In this case only improve vehicle temperature.
Blue exhaust smoke
If the car's exhaust emissions out of the blue, then you have to pay attention, because the car is likely to burn oil, and some brands of cars to a lot more to look at. If this phenomenon is best to check where the car round in the end there is a problem, you can use Autel MaxiSys Pro MS908P and Autel MaxiDas DS708 diagnostic tool for testing, early detection of problems will not cause too much damage to your car.
Generally because of the following reasons: the cylinder wall and the piston gap is too big, too much oil into the cylinder; oil sump inside adds a lot of oil fleeing into the cylinder; fleeing into the high-temperature gas cylinders inside the oil pan, so contaminated oil deterioration, thinning, affecting lubrication.
Black exhaust smoke
When black smoke exhaust pipe, usually burning gasoline over the car engine, cylinder gasoline mixture components beyond the normal level. You can use the Launch X431 Diagun III and Launch X431 V+ Pro3 diagnostic tool to check.
Generally because of the following reasons: air filter is dirty, inadequate intake; carburetor out of order; no carburetor EFI car, it may be contaminated oxygen sensor in the exhaust pipe, unable to gas distribution The computer provides the correct information. These problems will lead to carbon deposition valve affect the tightness of the combustion chamber, resulting in decreased engine power, resulting in decreased vehicle power, sluggish acceleration.