What are the reasons for the loud engine noise in the Toyota Levin?
2 Answers
Toyota Levin engine noise is loud for the following reasons: There are many reasons for loud engine noise, such as engine parts wear, muffler aging, poor lubrication system, excessive carbon deposits, etc., which can all cause noise. By adding vibration damping panels combined with sound-absorbing pads, the road noise and tire noise of the engine can be effectively resolved. Extension: Road noise and tire noise are caused by the friction between the tires and the road surface, which generates vibrations and noise. Therefore, vibration damping is the best method. Comprehensive construction of vibration damping panels or specialized vibration damping panels, sound-absorbing pads, and door seals on the fenders, floor, and doors can improve tire noise and road noise from three sources: vibration damping, sound absorption, and sound insulation.
When driving my Toyota Levin, I encountered the annoying issue of excessive engine noise, primarily caused by the engine oil not being changed for too long, becoming thick and black. The reduced lubrication led to increased engine friction, resulting in a rumbling sound. Another time, it was due to a loose or worn belt, which produced a squealing noise upon startup. If spark plugs age and aren't replaced in time, unstable ignition can also increase noise. I once checked them myself and found the tips were eroded; replacing them made the engine much quieter. A dirty air filter clogging the intake, affecting the engine's breathing, is another common factor. Don’t underestimate these issues—excessive noise might indicate deeper problems like an exhaust leak, which should be addressed early to prevent engine overheating and potential part damage. I recommend a simple check every 5,000 kilometers, changing the oil or replacing the belt—it’s low-cost and hassle-free. The Levin is reliable, but maintenance is key.
