What Causes Loud Engine Noise in Cars?
2 Answers
Car engine noise issues and solutions are as follows: Engine Mount Deterioration: After high mileage, engine mounts may deteriorate. Replacing the engine mounts can resolve this issue. Seal Strip Aging: If the engine sounds normal externally but noise is excessive inside the cabin, this indicates poor vehicle sound insulation. Inspect the vehicle's sealing strips for signs of aging. Alternatively, improving the vehicle's sealing effectiveness may reduce noise. Cylinder Valve Malfunction: If the engine produces a dull, tapping-like sound during operation, this may indicate cylinder valve issues. In such cases, this sound typically disappears when driving at higher speeds.
After driving for many years, there are quite a few reasons for a loud engine sound. Insufficient oil or aged and deteriorated engine oil can increase friction between parts, making the sound louder. A leak in the exhaust system or a broken muffler directly amplifies the noise, creating a roaring sound. If the belt is loose or worn, the squeaking sound is particularly noticeable. A clogged air filter restricts airflow, causing the engine to work harder and increasing noise. Internal issues like incorrect valve clearance or piston wear are even more troublesome. When you hear unusual sounds, it's best to first check the oil level with the dipstick, identify where the noise is coming from, and perform timely maintenance to avoid major repairs, especially for older cars. Regular inspections can save you a lot of hassle.
