What to Do When the Motorcycle Carburetor Doesn't Draw Fuel?

[StJesse]

Check whether there are issues with the fuel tank switch, suction pipe, and the intake pipe between the carburetor and the engine. Below are the relevant details: 1. Carburetor: It is a passive fuel supply system for motorcycles, and its atomization effect directly affects the combustion state of the vehicle, which in turn impacts the acceleration performance. Therefore, many instances of weak acceleration in motorcycles are directly related to this system. 2. Negative Pressure Type: The fuel tank switch of a motorcycle is of the negative pressure type, requiring the engine to be running (rotating) to draw fuel. After the engine is shut off, the fuel tank switch automatically cuts off the fuel supply. If the fuel tank switch is damaged or its suction pipe is aged and leaking, it can cause the carburetor to fail to draw fuel. You can remove the suction pipe and suck on it with your mouth. If the fuel tank switch is not damaged and the suction pipe is not leaking, fuel will flow from the fuel tank switch's pipe into the carburetor. If the carburetor is not spraying fuel (air-fuel mixture) into the cylinder, it is mostly due to a clogged carburetor, which can be resolved by thorough cleaning and adjustment.