What are the reasons for the buzzing sound in a motorcycle engine?
2 Answers
The reasons for the buzzing sound in a motorcycle engine are: 1. The battery is old and has no power; 2. In winter, the temperature is relatively low, and the engine has not completed preheating; 3. Spark plug failure, the spark plug has been used for too long and its performance has degraded; 4. There is no gasoline in the fuel tank; 5. Low temperatures cause the viscosity of the engine oil inside the motorcycle to increase, and in cold temperatures, the oil may even solidify into clumps. Solutions for the buzzing sound in a motorcycle engine: 1. Check if the automatic choke is stuck in the closed position; 2. Check the engine's compression. If the valves are leaking or the engine is severely worn, it will be difficult to start when cold; 3. Park the motorcycle indoors or in a warmer place, and press the throttle a few times before starting the engine; 4. Clean the carburetor.
During my long-distance motorcycle trip, the engine suddenly made a high-pitched squealing sound, which made me uneasy. The noise resembled metal friction. After stopping to inspect, I found the exhaust pipe joint screws were slightly loose, and the noise reduced after tightening them. Later, a friend shared that such squealing noises might originate from aging exhaust gaskets leaking air or dry chain friction. When the chain lacks lubrication, it can produce creaking or squealing sounds, which can be quieted by adding chain lubricant. For belt-driven models, improper belt tension can also cause squealing. Additionally, loose spark plugs or faulty electrical connections can generate arc-induced buzzing sounds, which are quite piercing. I believe it's crucial not to delay—immediately perform a simple check on chain lubrication and exhaust pipe tightness. If it's something more severe like bearing wear, delaying repairs could damage engine components. Riding safety comes first; always stop to address abnormal sounds promptly, as minor issues can escalate into major accidents.
