Why is the engine noise of the Yuexiang V3 very loud?
2 Answers
The loud engine noise in the Yuexiang V3 is caused by incomplete gasoline combustion and increased friction and wear due to the transmission operating under load. Incomplete gasoline combustion: Carbon deposits can lead to incomplete gasoline combustion, causing the engine to shake. Engine carbon deposits have a significant impact on the car. Firstly, they reduce engine power, resulting in uneven and gradually decreasing power output—in other words, the car becomes less powerful over time. Secondly, they increase fuel consumption, adding to the economic burden. Thirdly, they make cold starts difficult, meaning the car is harder to ignite. Finally, severe carbon deposits in the combustion chamber can cause cylinder knocking, producing noises during low-speed acceleration, damaging the pistons and crankshaft, and leading to engine overheating, which severely affects the car's safety. Increased friction and wear due to transmission operating under load: Operating the transmission under load can degrade the quality and friction characteristics of the transmission oil, increasing friction and wear. This leads to transmission noise. Additionally, sludge (impurities or dirt) can form inside the transmission (e.g., in the valve body), causing issues such as jerking, gear slippage, impact, slipping, abnormal noises, delays, overheating, and oil leaks.
I've been driving the Yuexiang V3 for almost five years, and excessive noise is often due to too much engine carbon buildup or not keeping up with regular maintenance. As the car ages, carbon deposits inside the cylinders can cause incomplete combustion, resulting in a knocking sound similar to piston slap. Dirty or insufficient engine oil leads to poor lubrication, making friction noises louder. Additionally, a loose or cracked belt can produce squealing sounds when rotating, and a leaking exhaust pipe causes uncontrolled increases in exhaust noise. Ignoring carbon buildup not only increases fuel consumption but also damages the engine. It's recommended to first check and top up the engine oil or replace it with fresh oil, then visit a shop for carbon cleaning service. Replacing belts or fixing the exhaust pipe isn’t expensive either. Excessive noise, if left unattended, may shorten the engine’s lifespan, so it’s important to address it early for safety and longevity.
