Classic fox asks you the question of flameout.

Don't always wash the throttle, just wash it once every tens of thousands of kilometers. If you wash it too often, the grease on the rotating shaft of the throttle plate will be washed away, the valve plate will not rotate flexibly, and it will be difficult to respond to small movements before it will turn off. Try to apply a little lubricating oil between the valve shaft and the throttle body.