Why Has the Car Engine Noise Suddenly Increased?

1 Answers
CameronRose
07/30/25 3:10am
Reasons for sudden increase in car engine noise: 1. Excessive carbon buildup in the engine causing louder noise; 2. Use of inappropriate or dirty engine oil; 3. Loose screws on the engine underguard, a common minor issue that can be fixed by tightening or adjusting the screws; 4. Aging engine mounts, which support the engine and need replacement when worn out; 5. Loose plastic parts in the engine compartment, such as the engine cover or intake pipe, which should be tightened; 6. Abnormal noise from engine belts, including power steering belts and alternator belts, caused by aging, over-looseness, or over-tightness.
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