What to Do About Abnormal Engine Noises in a Car?

[VioletDella]

Solutions for abnormal engine noises in a car include: 1. Check the fuel grade being used; 2. Inspect the engine temperature; 3. Examine the air-fuel ratio of the engine mixture; 4. Verify the connection of the engine's negative ground wire; 5. Check for carbon buildup in the engine combustion chamber; 6. Inspect the ignition timing. Common causes of abnormal engine noises are: 1. Cold start noise due to unsuitable engine oil; 2. Incorrect belt tension; 3. Poor fuel quality or wrong fuel grade; 4. External engine factors; 5. Insufficient oil pressure causing the timing chain to malfunction; 6. Leakage in the crankcase ventilation system.