What Causes Abnormal Noise in Motorcycle Shock Absorbers?
2 Answers
Shock absorber abnormal noise is caused by oil leakage, aging or lack of lubrication in the top seat plane bearing, or deformation or breakage of the shock absorber spring. Below are the detailed explanations: Oil leakage in the shock absorber: When the shock absorber leaks oil, the internal parts cannot be effectively lubricated, resulting in significant friction noise during operation. Aging or lack of lubrication in the top seat plane bearing: The plane bearing is located in the engine compartment. Open the hood and press down on the body to check if the noise comes from the shock absorber top seat. It is likely that the plane bearing has aged. Deformation or breakage of the shock absorber spring: In such cases, the shock absorber spring must be completely replaced.
I've been thinking about this for a while, and there are quite a few common causes for motorcycle suspension noises. First, worn shock absorber seals are the prime suspect—over time, oil leaks out, causing friction sounds, especially noticeable on bumpy roads. Next, rusty or aged springs can produce creaking noises, often occurring after riding in humid environments. Loose parts are another frequent issue, like untightened screws or improper installation, leading to rattling over bumps—regular checks and tightening are needed. Foreign objects stuck inside can also cause noise; after riding through mud or gravel areas, check the suspension for trapped debris like sand. Overall, suspension issues affect ride smoothness, so it's wise to quickly shake the bike before riding to listen for sounds—minor issues might just need screw tightening, but serious problems should be promptly repaired for safety.