After the big dipper throttle was cleaned, there were also reasons for the clutch flameout.

Throttle damage, timing system problems, etc.

1, throttle. When cleaning the big dipper throttle, the failure of the door shaft and spring is the cause of the throttle damage.

2. Timing system. Timing is an important part of engine valve distribution system. When cleaning the big dipper throttle, due to the problem of the timing system, the corresponding intake valve and exhaust valve can not be opened and closed regularly, which leads to the phenomenon of flameout when stepping on the clutch.