Why is the car very noisy after starting?
2 Answers
The reasons why the car is very noisy after starting: 1. Engine oil: If the viscosity of the vehicle's engine oil is too high, it can easily cause problems with engine operation, reduce lubrication, and lead to increased engine noise; 2. Belt: Check if the belt is loose. Sometimes a loose belt can cause the noise in the engine compartment to increase; 3. Water temperature: If the engine noise is loud, it could also be due to high water temperature; 4. Idle speed: If the vehicle's idle speed is high, the noise will increase. You can clean the throttle valve, intake valve, and fuel injector; 5. Sound insulation: If the engine sounds normal outside the car but feels very noisy inside, it may be due to poor sound insulation. Replacing the vehicle's sealing strips can help solve this issue.
I'm the car owner. A while ago, the engine made unusually loud noises after starting. The mechanic said it might be due to insufficient or aged engine oil causing increased friction between parts, naturally leading to more noise. A damaged muffler can also cause similar issues, with exhaust leaks producing particularly harsh sounds. Since I drive frequently, he recommended checking the oil level regularly and topping up or changing it to avoid long-term engine damage. Increased noise is often an early warning sign – don't wait until the noise causes major engine damage that costs a fortune to repair. Addressing it early saves both hassle and money.
