What's the reason for lifan motorcycle's throttle flameout?

It is normal if the carburetor used for motorcycle is a plunger throttle carburetor. Because there is too much air in and out of the plunger carburetor after the throttle valve suddenly rises when the throttle valve suddenly refuels, the mixture supplied by the carburetor is too thin to be ignited and detonated by the high-pressure fire of the spark plug after entering the combustion chamber and being compressed. So it caused the engine to stall.