It is not easy for a motorcycle to slow down after releasing the throttle.

1, throttle line and throttle handle cause the throttle not to return (check throttle knob or throttle line).

2. Throttle carbon deposit. Usually, due to the poor quality of gasoline, there is carbon deposit on the sliding surface of throttle valve, which leads to no backflow (cleaning with cleaning agent or gasoline).

3. The combustible mixture is very thin. Imbalance of oil-gas mixing ratio leads to