What Are the Reasons for Increased Car Noise?
3 Answers
Reasons for increased car noise include insufficient engine oil, poor fuel combustion, and premature fuel supply timing. Insufficient engine oil: Various components cannot receive normal lubrication, and wear leads to increased engine noise. Adding engine oil can solve the problem. Poor fuel combustion: Low injection pressure, fuel injector dripping, poor fuel atomization, and delayed fuel supply timing can all cause poor fuel combustion, leading to knocking and increased engine noise. The fuel injector should be removed for inspection and adjustment, and the fuel supply timing should be adjusted. If necessary, replace the parts to meet the specifications. Premature fuel supply timing: When the piston movement has not reached the specified position, the fuel injector starts injecting fuel, causing premature fuel combustion. High-pressure gas in the cylinder impacts the piston, producing a rhythmic sound. This issue can be resolved by adjusting the fuel supply timing.
I've encountered the issue of increased car noise several times. At first, I thought it was a tire problem, but later discovered it was mainly caused by leaks in the exhaust system. The noise was particularly noticeable during acceleration, like a deep roaring sound. The mechanic said aging or cracks in the exhaust pipe could cause this. It could also be due to uneven tire wear, causing a humming noise at high speeds, or loose fan bearings making extra noise when parked. If not addressed promptly, fuel consumption may increase, and the engine could be damaged. I recommend checking under the car every six months with a flashlight to inspect the exhaust pipe and muffler for rust or gaps. Regularly changing the oil and balancing the tires also helps—these small actions can save big money. In short, noise is your car's signal; don't ignore it to avoid problems on the road.
I'm someone who often tinkers with cars myself, and there are many reasons why a car's noise might increase. The most common is a leak in the exhaust system, which produces a hissing sound during acceleration; noise from the engine compartment could be due to loose belts or worn bearings, becoming more noticeable at high speeds. Unbalanced or excessively worn tires can also increase road noise. A simple self-check method: start the car and listen for the source of the noise, get out and check if the exhaust pipe's smoke is normal, and use a jack to lift the body and shake the wheels to see if there's any looseness. Regular maintenance like changing the air filter and oil can prevent issues. If the noise continues to grow louder, don't push it—seek professional help as soon as possible to avoid minor issues turning into major accidents. This saves money and gives peace of mind.
