What is the reason for the oil stain on the accelerator of King Kong car?

If you can see the throttle, there is no obvious black oil. This situation is usually caused by the blockage of the exhaust valve in the valve cover. The bonnet assembly needs to be replaced to solve this problem. Throttle is a controllable valve that controls air to enter the engine. After the gas enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be burned to do work. It connects the air filter and the engine block, and is called the throat of the automobile engine. How to clean and prevent: 1. Should be removed and cleaned; 2. Correct some misunderstandings of throttle cleaning; 3. The main cause of throttle scaling is oil vapor, followed by particles and moisture in the air. That is to say, the throttle scaling speed will be much slower if the crankcase ventilation pipe is removed with a qualified air filter. The crankshaft is built in the lower side of the crankcase and connected with the oil pan. The working temperature of this part is about 100 ~ 180.