- Empty fuel tank: Before beginning troubleshooting procedure fuel tank of the motorbike to make sure it has enough gas. Fuel tank running out, the engine will start but quickly run out of fuel and turns off.
- Clogged fuel filter: A clogged gasoline filter might limit the amount of fuel that gets into the carburetor, making the engine run erratically and eventually stall. Examine for dirt or obstructions by taking out the fuel filter.
- Faulty fuel petcock: Examine the fuel petcock to ensure it is in the "ON" position and allowing adequate gas flow. The fuel petcock may be clogged with dirt or debris in some circumstances, which inhibits fuel flow.
Ignition System faults:
- Faulty spark plug: A faulty or foul spark plug can prevent the engine from running well. Remove and inspect the spark plug. Be sure the spark plug is clean, dry, and undamaged and check the spark plug gap.
- Loose spark plug wire: Make sure that the spark plug wire is connected securely to the spark plug and the ignition coil.
Electrical system issues:
- Low battery voltage: If the battery voltage is too low, the starter motor may not be able to turn the engine over fast enough to start it. Check the battery voltage with a voltmeter and recharge or replace the battery if needed.
- Faulty ignition switch: A faulty ignition switch may not be providing power to the ignition system. Check the ignition switch and replace it if necessary.
- Wiring issues: Check for any loose or disconnected wiring in the ignition system. Ensure all the wiring is properly connected.
Carburetor issues:
- Idle mixture adjustment: Incorrect idle mixture adjustment can lead to the engine stalling or poor running conditions. Adjust the idle mixture according to the manufacturer's recommendations.
- Dirty or clogged carburetor: A dirty or clogged carburetor can prevent the engine from getting the proper air/fuel mixture. Remove and clean the carburetor, paying close attention to the jets and passages.
If the problem persists after checking all of these steps, it is best to consult with a qualified mechanic for further assistance.
