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3. Sudden motorcycle shutdown due to low or lack of oil
Symptoms of this condition include the motorcycle stalling while riding, with the starter not engaging, but after letting the engine cool down for a while, the starter works again.
A motorcycle running low or lacking oil causes engine components to lack lubrication, resulting in high friction and heat, leading to engine overheating and shutdown to protect the engine. This situation occurs after more than 6 months of use (if used frequently) or 1 year without an oil change.
When encountering this issue, you simply need to change the oil. Most gas stations now offer oil change services, so you can find the nearest one or the nearest repair shop to change the oil for your motorcycle.
Motorcycle engine stalling while running and the starter not engaging can also be due to the engine overheating due to oil shortage.4. Sudden motorcycle shutdown while running due to a faulty fuel pump
The fuel pump plays a vital role in supplying gasoline to the engine, ensuring the combustion process and providing energy for the vehicle's operation. If the fuel pump malfunctions, the vehicle inevitably becomes immobile, resulting in sudden engine shutdown during movement.
Replacing the fuel pump is the only solution in this situation.
5. Sudden engine shutdown in motorcycles due to faulty ignition CDI unit
Solution: Replacement. It's advisable to have a spare CDI unit to avoid inconvenience. You can ask a mechanic to conceal the spare CDI unit in a different location within the motorcycle for added security.
6. Motorcycle engine sudden shutdown due to excessive spark plug gap
Solution: Remove the spark plug and gently tap the curved electrode to narrow the gap between the two electrodes, approximately half a millimeter is optimal. Avoid excessive narrowing as it may cause issues. If the spark plug is too old, consider replacing it, and it's recommended to replace the spark plug after every 15,000 km of usage, even if it seems to be functioning well.
7. Motorcycle engine shutdown due to loose spark plug cap causing ignition failure
Solution: Securely reattach the cap. The spark plug cap plays a crucial role in the vehicle's operation. Therefore, mechanics also need to ensure this detail is secure for stable vehicle performance.
8. Motorcycle engine shutting down while riding may be caused by a worn-out intake valve, leading to compression loss
You may encounter this scenario when suddenly riding at unusually high speeds. Deposits inside the combustion chamber may fall onto the intake valve, preventing it from sealing properly, resulting in sudden engine shutdown.
Checking method: Remove the spark plug, turn off the ignition switch to prevent electric shock, use a finger to tightly cover the spark plug hole, kick the starter a few times, if you feel very weak pressure escaping, the diagnosis is correct.
Solution: Remove the spark plug and pour a few cc's of oil into the spark plug hole, reinstall the spark plug, and start the engine. It will start again immediately because the oil will push the obstruction outwards.
Most issues causing motorcycles to shut down while running require the expertise of professional mechanics to resolve.9. Motorcycle engine shutdown due to stuck fuel filter
Symptoms: the motorcycle runs jerkily for a while before shutting down. The cause could be contaminated fuel or long-term dirt buildup.
Temporary solution: Remove the fuel filter, paying attention to the direction, blow against the flow to clear it. Remember to replace it with a new fuel filter when you get home.
10. Sudden motorcycle engine shutdown due to clogged fuel tank and lines
Similar symptoms as above, and when you remove the fuel filter, no fuel flows out.
Solution: Visit a tire repair shop and use compressed air to blow backward from the fuel line into the gas tank, or blow with your mouth.
Drain the gas tank by using a siphon tube to transfer the gas from the tank to another container placed at a lower position outside. While the gas is flowing, move the tube head back and forth beneath the tank bottom to suck out any dirt deposits.
Filter the gasoline through cloth before pouring it back into the tank. As for the fuel line, use the core of a speedometer cable (meter cable core) to thread in, rotate and push, the fuel line will clear.
11. Motorcycle engine shutdown due to clogged vent hole on the gas tank cap
Solution: Unscrew the gas tank cap and use a sharp needle to clear the hole. Note that there are caps with holes on the top and caps with holes on the bottom, the ones with holes on the top tend to clog more often.
12. Motorcycle engine shutdown due to insufficient oil causing overheating and seizing
Checking method: Remove the dipstick, wipe it clean and reinsert it without screwing, pull it out to see if the oil level reaches the mark at the end of the dipstick, if no oil adheres, then the diagnosis is correct.
Solution: Do not attempt to start the engine at this time, even though the engine can still start when sufficiently cool. Ask someone else to buy oil for you. Stand the bike on its stand and add oil to the specified level, determined by the dipstick head.
Here are 12 reasons why motorcycles suddenly shut down while riding and fail to start. Hopefully, you have gained the experience to handle this situation when it occurs.
