Why is there oil in the intake pipe?

Causes of engine oil in automobile intake pipe;

1. The engine is idling for a long time, the air filter is dirty, and the crankcase ventilation system is blocked or deformed;

2. The oil return pipe of turbocharger is blocked, leaked or deformed;

3. The lubricating oil in the turbocharger middle shell is coking;

4. Cylinder wear leads to piston ring gas turbulence;

5. The flow resistance of the exhaust system is too large.

The intake manifold refers to the intake pipe from the back of the carburetor or throttle body to the front of the intake port of the cylinder head. Its function is to distribute the mixture of air and fuel from the carburetor or throttle body to the air intake of each cylinder.

Because the intake manifold is located behind the throttle, when the throttle opening of the engine is small, enough air cannot be sucked into the cylinder, which will lead to a high vacuum degree of the manifold; When the engine throttle opening is large, the vacuum in the intake manifold will become smaller. Therefore, the fuel injection engine will install a pressure gauge on the intake manifold for ECU to judge the engine load and give appropriate fuel injection. Million car purchase subsidy