On the problem of cable eight throttle valve

Hello, riders! Macroscopically speaking, the whole throttle mechanism is dirty. Microscopically, the throttle valve is a device similar to a valve, and dirt accumulates on the edge of the valve plate, which leads to the inconsistency of intake air volume at the same angle when the valve is opened. Then the problem comes: in fact, you only need to ensure that the dirt on the edge of the valve plate can be cleaned and the air intake is consistent with the standard value at the same angle.