At present, the engine used in the car is basically a four stroke engine. This type of engine at the most common reason is oil smoke in burning, that is oil to the combustion chamber. Oil and fuel should be completely separated, if the exhaust take the blue smoke, may be the result of the following fault of engine parts.

There are three rings on the head of the piston, the top two are gas rings, to ensure the tightness of the cylinder and piston; the bottom is an oil ring, used to scrape the oil adsorbed on the cylinder wall. The opening of the two gas rings on the piston is arranged diagonally, so as to minimize the string of oil. But after the gap has been worn for a long time, the openings will gradually become larger, and the oil will seep out of the two ring, resulting in a string of oil. Sometimes due to repair or assembly wrong sea, the piston ring gap alignment installation, but also lead to oil into the combustion chamber involved in combustion.

Usually, the oil channeling is due to the engine to a certain number of years, or that the gas ring has reached its service life. Therefore, the oil channeling is due to excessive wear and tear of the piston ring.

For new cars, unless the assembly problems, generally speaking, the new car's gas ring is not prone to problems. This situation is likely to add too much oil, causing the oil from the valve spring infiltration into the combustion chamber, resulting in burning oil.

Another cause of engine oil failure is the poor sealing of valve seals. If the valve seal is not good, it is easy to drop the oil into the combustion chamber. The blue smoke was some just starting in the morning when the engine run, then eased, the symptoms are mostly caused by the slight leakage of the valve seal. Because the engine stopped overnight, air door seal leakage into the combustion chamber of the engine is more, so just starting when the blue smoke. Then because the valve seal leakage is in the normal running, take the blue smoke is not too obvious.

In addition, a variety of fault PCV fault, valve cylinder gasket leakage may also cause the oil into the combustion chamber, causing the engine to take the blue smoke.

For the four stroke engine, blue smoke will lead to fuel injector and cylinder coke. If the gas ring caused by the degradation of burning oil, will cause excessive oil consumption, if you do not check the oil habits lead to serious lack of oil, it may also occur on lava phenomenon, so if your car exhaust take the blue smoke, must be timely check.

To solve the problem that blue smoke from the burning oil, the most important thing is to find the root causes of the failure of the burning oil. Scientific and effective maintenance for the failure situation. It is not recommended to disassemble engines or replace parts to repair them.