The throttle is a controllable valve that controls the air to enter the engine. When the air enters the intake pipe, it will mix with the gasoline and become a combustible mixture, thus forming work. It is connected with air filter on top and engine block on the bottom, which is called the throat of automobile engine.

The four stroke throttle gasoline engine looks like this. The throttle is one of the most important parts in the engine system of EFI vehicle. Its upper part is the air grid of air filter, the lower part is the cylinder block and the throat of the engine. Whether the car accelerates flexibly has a lot to do with the dirty throttle. Cleaning the throttle can reduce fuel consumption and make the engine more flexible and vigorous. The throttle should be removed and cleaned, which is also the focus of discussion among car owners.