Why is the engine noise of BMW 320li very loud?
2 Answers
The reasons and solutions for the loud engine noise of BMW 320li are as follows: Poor fuel quality: When the car uses poor quality fuel, the combustion condition inside the engine will deteriorate, causing the engine to vibrate and produce noise. Replacing it with high-quality fuel can solve this problem. Loose engine mounts: Since the engine inside the engine compartment relies on components like engine mounts for support and fixation, if these parts become aged or loose, the engine will move during operation, resulting in noise. To solve this issue, simply tighten the engine mounts. Moving plastic parts: It could also be due to moving plastic parts inside the engine compartment, such as the engine cover or intake pipe. Once these plastic parts become loose, they will collide with the engine compartment, thereby generating noise.
I also encountered increased engine noise when driving my BMW 320Li before, which really startled me. At first, I thought it might be due to road conditions, but as the noise grew louder, I took it to the shop for inspection. The technician said it was due to the aging and loosening of the belt, causing a squeaking sound; it could also be insufficient or dirty engine oil, leading to increased friction and noise. They advised not to overlook small issues because if the belt breaks, it could damage the engine. You can simply check the engine oil level yourself to ensure it's not too low; regularly changing the oil and filter can reduce such noises. A sudden increase in noise is often a sign of trouble, and early repair is safer and more cost-effective. After fixing mine, it became much quieter and more comfortable to drive. Remember, a car is like a partner—take care of it, and it will reward you well.
