Is it normal for the waste gas valve pipe to have slight oil?

It is not normal that there is trace oil in the exhaust pipe. The reason for the oil leakage of the exhaust valve may be that the valve guide and valve stem are seriously worn and the gap is too large, so that the oil flows down. The solution is to find the damaged place and replace it.

There may also be problems with the wastegate valve, which is generally installed near the valve cover, with one side connected to the throttle inlet hose and the other side connected to the valve cover. When it has problems, it will lose the function of oil-gas separation, and suck oil in while inhaling, so that the waste gate valve tube has oil. In this case, the oil-gas separator can be replaced.

The exhaust valve, also known as the oil-gas separator, is used to separate the engine oil from the exhaust gas of the crankcase, so as to reduce the outflow of the engine oil from the breathing port of the crankcase. If there is a fault, it may also cause the turbocharger to fail to work normally and make the car unable to accelerate. Million car purchase subsidy