Why is the car engine noise getting louder?

[Teddy]

The reasons for increased car engine noise are as follows: 1. Excessive engine carbon deposits, aging engine mounts, improper use of engine oil, abnormal operation of engine cylinders, and engine knocking. 2. Prolonged use of the car may lead to incomplete fuel combustion in the engine, resulting in carbon deposits. It is essential to clean the engine carbon deposits promptly. 3. The engine mounts are rubber blocks between the engine and the frame, designed to reduce vibrations generated during engine operation and provide cushioning. Over time, these mounts may age or become loose, leading to increased engine noise. If the engine mounts show signs of aging or loosening, they should be replaced immediately. 4. Using different types of engine oil during oil changes can result in a mismatch between the oil viscosity and the engine requirements, leading to insufficient lubrication and excessive engine wear. Therefore, always use the same brand of engine oil and avoid mixing different types.