What Causes Loud Noise When Accelerating on a Scooter?

[Matthew]

The reasons for loud noise when accelerating on a scooter include cylinder overheating leading to loss of power, clogged internal engine valves, and exhaust pipe leaks. If the exhaust pipe is not damaged, the issue might be due to expired engine oil or rear gear oil, which requires timely replacement of the oil or gear oil. Factors affecting motorcycle noise: temperature, speed, load, and lubrication. Some engine noises appear as temperature rises, while others diminish with increasing temperature. Some noises are often accompanied by heating phenomena. Noise has a certain relationship with engine speed and vehicle speed. Load also affects noise, with noise generally increasing as the load becomes heavier. When lubrication conditions are poor, the noise tends to be particularly severe. Scooter maintenance: Scooter maintenance primarily focuses on cleaning the air filter and changing the oil. The air filter should be cleaned every 2,000 kilometers because the scooter's air filter is positioned lower than that of a standard motorcycle, and the intake direction is usually horizontal, causing the filter to get dirtier during rides. Oil should be changed every 800 to 1,500 kilometers, using a unified engine cleaner for each change.