Why is the throttle of Mai Rui Bao always dirty?

Hello, the possible reasons for dirty throttle are:

1. The air filter element is dirty, and the effect of filtering dust in the air becomes worse! You can disassemble the air filter to check whether it is dirty, and change it if it is dirty.

2. There is a lot of exhaust gas in the exhaust pipe (the pipe that ventilates the valve cover, and you have oil vapor entering the intake hose and passing through the throttle). You can look at the hose above the throttle body. There is a small tube connected to the valve cover. You can remove it to see if there is oil in the hose. If there is oil, it is probably for this reason! Therefore, it is necessary to check whether there is a problem with the one-way valve for ventilation in the valve cover!

I hope the above answers can help you. Thank you! Have a nice trip, too! Thank you. If you have any questions about the car, ask the car master. 4S shop professional technician, 10 minutes to solve.