What should I do if the accelerator of Chang 'an Star is easy to dust?

When removing the throttle valve, the removed part should be effectively shielded to prevent foreign objects from entering the cylinder. If a small amount of dust enters the intake manifold, and the dust particles are not very large, it will be carried out by the exhaust gas. If the amount of dust is large and the particle size is relatively large, the cylinder wall may be worn. This situation will not be particularly obvious at the beginning.