What is the reason for the loud engine sound of Suzuki UY125?
2 Answers
If this phenomenon occurs after a period of use, it may be related to the lubricating oil used. If the quality of the lubricating oil is poor or its viscosity is too thin, it can amplify the engine noise. Therefore, high-quality lubricating oil should be replaced for observation. More relevant information is as follows: Long riding time: If the vehicle has been ridden for a long time, it may be due to excessive valve clearance or a loose small chain, which can cause increased engine noise. Adjustment and maintenance: In this case, it is necessary to adjust the valve clearance, check the looseness of the small chain, and perform appropriate adjustments and maintenance to eliminate this phenomenon.
My Suzuki UY125 recently had an issue with loud engine noise. The mechanic found it was caused by belt slippage in the transmission case and worn-out clutch shoes. Over time, the belt stretches and ages, making a drum-like banging noise during acceleration. Another time, I discovered small stones stuck in the fan cover, causing a harsh metal grinding sound. Engine oil is also crucial—once I used the wrong viscosity, and the engine roared like a tractor. Excessive valve clearance can create a ticking noise; if adjusting it yourself, use a feeler gauge to set it precisely at 0.1mm. The most annoying issue was the exhaust gasket aging and leaking, making embarrassing popping sounds at red lights. All these need regular checks. After replacing the entire transmission system and exhaust gaskets, the noise immediately became much quieter.
