Uu motorcycle accelerator is unstable after idling.

Because the air intake is getting bigger.

Because in normal use, when the throttle is slowly dirty, it will slowly adjust its opening with the degree of dirty. The dirtier it is, the bigger it opens. To a certain extent, the phenomenon of unstable idling and flameout will occur. When you clean up dirty things, the throttle opening will keep the original opening, and the air intake will become larger, resulting in excessive idle speed.

The limited filtration of the air filter actually means that it is in direct contact with the air. In fact, there is an air filter in front, which filters in front, but not everything can be filtered out, and dust or other dirty things will touch the throttle surface through the throttle.