What are the reasons why a motorcycle won't start after being left for several months?
2 Answers
It could be due to the electric start not working, caused by a depleted battery. Gasoline is volatile, and if a motorcycle is left unused for too long, the gasoline inside may be consumed. Prolonged disuse of a motorcycle may also lead to certain components deteriorating or becoming damaged due to lack of maintenance. Below is additional information: Common faults: Common fault 1. Blue smoke from the exhaust pipe: During engine operation, light blue smoke is often visible at the tail of the exhaust muffler, accompanied by excessive oil consumption. Possible causes of the fault include: oil level too high; cylinder compression pressure below the specified value; increased gap between the piston, piston and cylinder liner. 2. Black smoke from the exhaust pipe: When the engine is running, black smoke comes out of the exhaust pipe, and a pungent gasoline smell can be detected, which is more noticeable during acceleration. Possible causes of the fault include: overly rich air-fuel mixture; poor spark plug performance; delayed ignition. 3. White smoke from the exhaust pipe: During engine operation, white smoke comes out of the exhaust pipe. Possible causes of the fault include: water content in the fuel; moisture in the cylinder or muffler.
I've encountered this situation before. If a motorcycle won't start after being parked for a long time, it's usually a battery issue. When left unused for extended periods, the battery self-discharges. Once the voltage drops below 10V, it can't power the starter motor. Try charging it first. If it still has trouble starting after charging, you'll likely need a new battery. Also, gasoline in the tank deteriorates after three or four months. The gum deposits can clog the carburetor or fuel injectors, requiring you to drain all the old fuel, clean the fuel system, and add fresh fuel. Spark plugs are also prone to moisture and carbon buildup - remove them to clean the electrode gap. Before long-term storage, it's recommended to fill the tank with fuel stabilizer, disconnect the battery's negative terminal, and start the engine for at least ten minutes each month to charge the battery.
