What Causes Excessive Engine Noise in Cars?
2 Answers
Excessive engine noise in cars can be attributed to the following reasons: 1. Insufficient engine oil; 2. Aging engine mounts; 3. Increased carbon buildup in the engine; 4. Deteriorated soundproofing seals. Engine maintenance methods include: 1. Using high-quality engine oil; 2. Using qualified coolant; 3. Regularly cleaning radiator scale; 4. Periodically removing carbon deposits from the engine; 5. Timely replacement of the vehicle's air filter, oil filter, and fuel filter; 6. Checking for damaged spark plugs. The function of an engine is to convert the thermal energy of gasoline into mechanical energy by burning the fuel in a sealed cylinder, causing gas expansion that pushes the piston to perform work.
Increased engine noise is quite common. I've experienced situations where the oil was too thin or hadn't been changed for too long, leading to poor lubrication and causing the pistons and bearings to make a clattering sound. Improper valve adjustment with excessive clearance results in sharp opening and closing noises; leaking exhaust system joints produce an annoying hissing sound. Squealing from loose or aged cracked belts is easy to identify. Regularly checking the oil condition, exhaust pipes, and belt tension is quite important. If left unrepaired for a long time, the noise worsens and accelerates wear, increasing the risk of engine damage, which can lead to hefty repair costs. My personal advice is to stop and check as soon as any unusual noise is heard, and don't delay until it becomes severe.
