What happens if there is too much carbon in the intake manifold?

The serious manifestations of carbon deposition in intake manifold are: engine parts can not work normally, starting is difficult, idle speed is unstable, power is reduced, and vehicle acceleration is weak. 1. For carburetor or throttle body gasoline injection engine, 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; 2. Its function is to distribute the mixed gas from carburetor or throttle body to the air inlet of each cylinder; 3. The intake manifold must distribute air, fuel mixture or clean air to each cylinder as evenly as possible, so the length of air flow channels in the intake manifold should be as equal as possible; 4. In order to reduce the airflow resistance and improve the intake capacity, the inner wall of the intake manifold should be smooth. At the same time, the intake manifold should be kept clean and cleaned in time.