What Causes the Abnormal Noise When Releasing the Throttle on a Motorcycle?
4 Answers
Abnormal noise when releasing the throttle on a motorcycle may be caused by improper tension of the drive chain or lack of lubrication. Below is relevant information about motorcycles: Types of motorcycle licenses: Currently, there are three types of motorcycle licenses in China—F, E, and D. License F only permits the operation of mopeds with engine displacements below 50CC, but this type of license is rarely pursued. License E allows the operation of any two-wheeled motorcycle without displacement restrictions. License D permits the operation of all two-wheeled and three-wheeled motorcycles. Therefore, holding an E license enables the operation of all two-wheeled motorcycles, as there is no separate license for large-displacement motorcycles. Concept of motorcycles: A motorcycle is a two-wheeled or three-wheeled vehicle powered by a gasoline engine, steered by handlebars to control the front wheel. It is lightweight, flexible, fast, and widely used for patrol, passenger and cargo transport, as well as a sports equipment.
As a long-time motorcycle rider, I've encountered similar situations. The buzzing noise when you let off the throttle is mostly caused by a loose or worn chain, because chain tension changes significantly when the throttle is closed, which easily generates noise. Sometimes it's due to failing wheel bearings - insufficient lubrication can cause squeaking sounds, especially more noticeable during deceleration. A loose exhaust system might also produce resonance noises when releasing the throttle, such as when exhaust pipe bolts aren't tightened properly. Don't underestimate these issues, as they may develop into more serious failures. It's best to regularly check chain tension and lubrication, maintaining proper chain tightness. If doing it yourself, use tools to measure chain slack, generally keeping it within a few centimeters. If unsure, just visit a repair shop - spending a little money can prevent major repairs. Remember, paying timely attention to small details makes riding safer and more comfortable.
Considering riding safety as the top priority, such abnormal noises must never be ignored. When the noise occurs upon releasing the throttle, it may indicate that the chain has loosened to a dangerous extent. A chain breaking at high speed would be extremely hazardous. Loose exhaust system mounting bolts could also cause resonant abnormal noises when releasing the throttle at high speeds. Another common issue is rear wheel bearing wear, where the sound becomes more piercing when lacking lubrication. I recommend immediately slowing down and stopping upon detecting any abnormal noise, then briefly checking if the chain tension is appropriate. If it's too loose, adjust it or add some grease. If the noise persists, never force the ride - promptly seek professional diagnosis. Otherwise, minor issues may escalate into chain detachment or bearing failure, dramatically increasing repair costs. Regular maintenance is key to prevention; monthly chain inspections can prevent 90% of such problems.
As an ordinary rider, I've also encountered the issue of abnormal noises when releasing the throttle, mainly caused by insufficient chain tension or excessive dirt leading to increased friction sounds. The chain experiences significant tension changes when the throttle is released, resulting in creaking sounds if not properly adjusted. Additionally, loose connections at the exhaust outlet can easily produce resonance noises when releasing the throttle. Minor issues like insufficient lubrication in wheel bearings or uneven tire wear can also cause similar symptoms. You can simply check if the chain is tight, try tightening screws or applying lubricant for testing. Regularly cleaning chain dust after riding helps reduce the occurrence of abnormal noises. These experiences have taught me the importance of timely maintenance, saving a lot of trouble.
