What could be the reason for the engine being noisier than before?

1 Answers
LeTheo
07/30/25 7:59am
It may be caused by aging engine mounts. After accumulating high mileage, the engine mounts can deteriorate, and replacing them should resolve the issue. Carbon buildup can also lead to increased engine noise. If the engine sounds normal during operation but the noise inside the car feels excessive, it indicates poor sound insulation. In this case, check the vehicle's sealing strips for signs of aging or consider enhancing the sealing to reduce noise. Increased engine noise is a common occurrence in high-mileage vehicles, and while owners need not worry excessively, they should pay closer attention to maintenance. If the engine produces a dull, slapping sound during operation, it could indicate an issue with the cylinder valves. In such cases, if the noise disappears at high speeds, it is likely due to valve problems. Additionally, check the oil pressure to rule out any related issues.
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