Why does a motorcycle stall at idle but has no ignition issues?

[LiamAnn]

Reasons for motorcycle stalling at idle: Fuel line obstruction, faulty spark plug possibly malfunctioning, slightly narrow engine valve clearance, ignition wiring leakage due to high temperature, etc., requiring further inspection and repair. Carburetor mixture too lean: Since current motorcycles must meet Euro 2 standards upon leaving the factory, manufacturers often set the mixture ratio very lean to comply. However, the mixture ratio must be readjusted to normal before actual use, as proper mixture ratio ensures easier starting. Valves not fully broken in: Slight valve leakage makes it necessary to set the idle speed higher to prevent stalling. Overly tight valves with leakage can also cause starting difficulties. It's best to adjust the valve clearance. Additionally, inspect the fuel line and check the spark plug for any issues.