The throttle valve is dirty. What will happen if you don't wash it?

Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful. It connects the air filter and the engine block, and is called the throat of the automobile engine. Throttle is one of the most important components in EFI automobile engine system. Its upper part is the air cleaner grille, and the lower part is the engine body, which is the throat of the automobile engine. Whether the acceleration of a car is flexible or not has a lot to do with the dirt of the throttle. Cleaning the throttle can reduce fuel consumption and make the engine flexible and energetic.

First of all, let's talk about the function of throttle valve. Throttle is a movable and controllable valve, which controls air to enter the engine. After the air enters the trachea, it will mix with gasoline and become a combustible mixture, so that the combustion will be successful. The throttle valve is connected with the air filter and the engine cylinder below. Throttle is also called the throat of the engine.

Throttle diagram

The air outside the engine must pass through the air filter before entering the engine. The air filter cannot filter out all impurities in the air. Secondly, the air passes through the throttle valve, so the impurities left in the air will stick to the throttle valve, which is more serious in heavily polluted areas. One case is that gasoline cannot be burned at 100%, and exhaust gas will remain and invade the throttle valve, forming carbon deposits in the throttle valve.

In addition, when the engine works at high temperature, the engine oil will produce oil vapor, and impurities in the oil vapor will also be adsorbed on the throttle. What happens when the throttle is dirty? It mainly affects the unstable idle speed, weak acceleration and high fuel consumption. Surprisingly, the idling speed is unstable, or when the traffic lights step on the brakes, the engine speed is unstable, up and down. In severe cases, the car won't catch fire and the engine fault light is on. If your car's idle speed is unstable and the acceleration is weak, check whether the throttle is too dirty, clean it up in time and solve the problem in time.