What Causes a Motorcycle to Stall When Starting?

[VanAaliyah]

If a motorcycle stalls after starting, it may be due to a lack of fuel in the tank. The specific causes that need to be checked are as follows: Electrical System: Check the spark plug ignition. If it is abnormal (no spark or a weak yellow spark), inspect all connections in the ignition circuit. Replace the spark plug, ignition coil, and ignition module one by one to determine which component is faulty. Air Intake System: Check if the air filter is dirty or clogged. Try removing the air filter and starting the engine again. Fuel System: Check if the negative pressure rubber tube connected to the intake manifold is aged, cracked, or leaking. Inspect whether the three-way fuel tank switch is damaged, if the carburetor fuel filter is clogged, if the fuel line is clear, if the carburetor jets are blocked, if the carburetor float height is too high or too low, if the main needle is worn, or if the vacuum diaphragm is ruptured.