What happens when the throttle fails?

Throttle failure usually leads to: 1, the car can't start or the throttle doesn't return after starting. 2. Black smoke consumes a lot of fuel. 3. The idle speed is too high and the acceleration is not smooth. The relevant information about the throttle valve is as follows: 1. Definition of throttle valve: The throttle valve is a control component that controls the intake of the engine, and adjusts the mixing ratio of gasoline and gas according to the computer signal, so that the gasoline can be fully burned to generate power. In fact, every time the driver steps on the accelerator, it is not oil but "gas" that pushes a certain amount of air into the engine by stepping on the accelerator and shifting gears. 2. Cause of throttle failure: The problem is largely caused by carbon deposition in the throttle, and the inside of the throttle is full of black carbon powder produced by insufficient combustion. The long use of the accelerator and the poor driving habits of the owner are all reasons for carbon deposition.