What are the solutions for a loud engine sound?
2 Answers
Solutions for a loud engine sound are as follows: 1. Loose belt: Check if the belt is loose, as a loose belt can cause the sound in the engine compartment to become louder. If you cannot identify the issue, it is recommended to visit a 4S shop or a professional repair shop for inspection. 2. Aging phenomenon: When the engine noise is significant, it is usually due to aging inside the engine, which leads to increased vibration and noise during operation. When the engine noise becomes louder, you can start by cleaning the engine to remove accumulated dust inside, effectively reducing the engine noise.
When my car's engine noise becomes louder, my first thought is that the engine oil needs to be changed, as the viscosity of old oil decreases, leading to poor lubrication and increased engine friction noise. During my last long-distance drive, I encountered a similar situation. Upon inspection, the oil was as dirty as black mud, and after switching to full synthetic oil, the noise immediately decreased. Additionally, a clogged air filter can also increase intake noise—simply blowing out the dust or replacing it with a new one will solve the issue. A loose belt can produce a sharp squealing sound, which can be fixed by adjusting the tensioner pulley or replacing the belt. If the exhaust pipe is cracked, the noise becomes even louder, and a quick weld at the repair shop will do the trick. I recommend regular maintenance, checking the engine oil every 5,000 kilometers, and replacing the air filter every six months—these small steps can prevent bigger problems. Abnormal engine noise should not be ignored, especially at high speeds, as it affects driving comfort and component lifespan. Addressing it early saves both money and hassle.
