What is the cause of dirty throttle?

1. The main reason for dirty throttle and carbon deposition is that the air flow moves back and forth during the intake and exhaust process of the engine. Not only will air be inhaled when intake, but the gas generated when the valves overlap will also flow back to the intake, resulting in carbon deposition. In addition, the forced ventilation of the crankcase in front of the throttle will re-introduce the exhaust gas in the crankcase into the cylinder for combustion through the intake valve, which will also directly lead to the dirty throttle.

2. Dirty throttle will cause high idle speed, weak acceleration, engine light alarm and other phenomena. The simple solution is to clean the throttle.