Why is the sound of a scooter getting louder and louder?
2 Answers
Scooter sound is getting louder and louder due to foreign objects or vehicle malfunctions. The following is an introduction to the reasons why the sound of a scooter is getting louder and louder: 1. Causes of the noise: Noise is generally produced by vibration, collision, and friction of objects. If the motorcycle engine is working normally, the sound during operation is very small and harmonious, but when the engine malfunctions, abnormal noise will occur. 2. Common faults of scooter sound: (1) Loose timing camshaft bearing. (2) Severe wear on the working surfaces of the timing cam and valve rocker arm. (3) Broken rear clutch spring. (4) Improper belt selection or clutch acceleration lag, resulting in the sound of the belt hitting the casing. (5) Severe wear of the front clutch pulley. (6) Wear of the electric starter clutch (the abnormal sound is more prominent during electric starting). (7) Incorrect ignition timing, sound of the valve hitting the piston (commonly seen in vehicles after maintenance).
I've been riding a scooter for over a decade, and recently the noise has increased, which is quite annoying. It's usually caused by an aging engine, especially when the cylinder and piston rings wear out, leading to increased friction noise. If there's a leak in the exhaust system, such as a loose or cracked exhaust pipe joint, the airflow obstruction can also cause loud noises. Chain issues are another culprit—if it's loose or lacks lubrication, it can produce creaking sounds during transmission. I recommend troubleshooting first: listen to where the noise comes from when starting the engine. If it's from the exhaust, there might be a leak; if it's near the rear wheel, the chain may need lubrication and tightening. Don't delay repairs, as worsening noise could indicate engine damage, increased fuel consumption, and air pollution. It's best to have a professional shop inspect it and replace parts with genuine ones—avoid cheap knockoffs, as saving a few bucks might lead to costly overhauls. Regular maintenance is key—I check the chain and engine oil every 500 kilometers to prevent noise issues.
