What's the Matter with Exhaust Noise?
2 Answers
Exhaust noise can be caused by the following reasons: Engine noise: In addition to the mechanical sounds emitted by the engine block, it also includes intake system noise. Tire noise: Generally, tire noise mainly consists of three parts. The first is the air noise composed of the air flow in the tire tread gaps and the air disturbance around the tire. The second is the tire vibration noise caused by the vibration of the tire body and tread parts. The third is the road noise caused by uneven road surfaces. Air noise: First is wind noise, second is wind leakage, and third is other noises. Body structure noise: First is the vibration transmission method of the body structure, and second is the noise generated by the vibration of metal components in the body under external forces.
I've encountered exhaust noise issues several times, mostly due to aging mufflers or cracks in the exhaust pipe. The most common cause is loose connections leading to gas leaks. From my experience, if the noise suddenly increases, you should immediately check under the car for obvious rust or holes. Otherwise, gas leaks can allow exhaust fumes to seep into the cabin, which poses health risks due to toxic gases. Problems with the catalytic converter can also increase noise, and repairing that can be very expensive, costing at least a few thousand yuan. I recommend not trying to fix it yourself; instead, take it to a professional shop where mechanics can use diagnostic equipment to check it out, preventing minor issues from becoming major expenses. In short, the exhaust system requires regular maintenance, such as checking for rust every six months, which can save a lot of trouble.
