What is the reason why the motorcycle cannot be turned off and still runs after removing the key?
3 Answers
The reason why the motorcycle cannot be turned off and still runs after removing the key is due to circuit breakage or series connection in the wiring. Reasons for stalling: Use of inferior fuel (many gas stations sell impure fuel for excessive profits) leading to engine carbon buildup and stalling, or faults in the spark plug or ignition coil causing one or more cylinders to misfire, resulting in stalling. Solutions: Stalling at idle: When the vehicle is idling, the speed is not very high. After stalling, simply restart the engine. For automatic transmission vehicles, the gear must be shifted into park or neutral before restarting the engine.
I once had an old motorcycle that experienced this issue—the engine wouldn't shut off even after removing the key, which made me break out in a cold sweat. Upon inspection, I found it could be due to a stuck ignition switch failing to disconnect the circuit, or a throttle cable sticking and not retracting, causing continuous fuel supply to the engine. A short circuit could also prevent the engine from shutting down, especially in rainy weather or older bikes, where the risk of short circuits is higher. Battery issues might also disrupt signal transmission, creating a false running condition. Don’t ignore this kind of malfunction—if it happens, pull over immediately and shut off the engine. Try manually resetting it by repeatedly twisting the throttle or toggling the switch. If that doesn’t work, call for roadside assistance and have a professional shop inspect the switch, fuel system, and electrical components. Regularly lubricate critical parts to prevent sticking.
Motorcycle failing to shut off is extremely dangerous. Having ridden for years, I emphasize the reasons: the ignition switch fails to cut off current, keeping the engine running; the throttle mechanism sticks and doesn't return, causing continuous fuel supply; short circuits or open circuits disrupt control signals, especially with aftermarket parts prone to issues. When this happens, stop immediately and don't attempt to restart to prevent equipment damage or accidents. First, check if the switch moves smoothly, if the throttle cable slides freely, and use a multimeter to test circuit continuity. It's recommended to visit an authorized repair shop for a thorough inspection and replace components like relays or fuses to ensure long-term safe and reliable riding.
