What Are the Causes of Abnormal Engine Noises?
2 Answers
Engine abnormal noises can be caused by: 1. Knocking-induced noises; 2. Excessive clearance leading to abnormal sounds; 3. Loose fasteners causing abnormal noises; 4. Bearing abnormalities generating noise; 5. Valve blockage; 6. Aged air filters, spark plug wires, or spark plugs. Engine maintenance methods include: 1. Using qualified lubricating oil; 2. Using qualified coolant; 3. Regularly cleaning radiator scale; 4. Periodically removing carbon deposits from the car; 5. Timely replacement of air filters, oil filters, and fuel filters; 6. Regular repair or replacement of fasteners; 7. Maintaining good driving habits.
Recently, I heard a knocking sound from the engine while driving, which was different from before. It might be due to issues with the ignition system, using low-quality gasoline causing detonation, or piston ring wear leading to knocking noises. If such sounds are ignored continuously, more components could wear out, such as damaged crankshaft bearings making repairs difficult, or even leading to an engine overhaul. Regularly changing the engine oil and avoiding poor-quality oil can prevent these issues. It's advisable to check the cause at a reputable repair shop as soon as abnormal sounds are noticed, without delay. My neighbor's car had a similar issue recently; he neglected to repair it, resulting in a breakdown on the highway, costing over a thousand dollars to fix. Driving safety comes first, and such problems should not be underestimated.
