Cause analysis of abnormal sound of Baojun 730 exhaust muffler

When parking, the exhaust pipe sprays water and makes abnormal noise. In general, the engine works normally. In the process of doing work and burning, more or less a proper amount of water vapor will be produced, and a large part of water vapor will condense into water droplets in the rear exhaust muffler and be discharged from the exhaust pipe. This phenomenon is especially obvious at low temperature. It can be said that the mixture sucked into the cylinder is completely burned and the exhaust purification efficiency is high, so it is normal. Don't worry, please feel free to use it if there is nothing abnormal in the engine operation. In addition, the problem of abnormal noise of exhaust pipe needs field test. According to the abnormal sound and the nature, characteristics and source of the sound, an accurate judgment can be made only after comprehensive analysis. Abnormal noise of exhaust pipe during driving may have the following conditions. First, the exhaust pipe is connected with the engine in a soft way, which may be caused by the damage of the soft connection after the car has been used for a long time. Secondly, the connection between the exhaust pipe and the frame is fixed by several rubber rings, so it can be checked whether the rubber rings have been damaged or whether there is a rubber aging problem; Finally, there are seals between the exhaust pipe and the flexible joint and between the flexible joint and the engine. You can check whether the seal is damaged. In addition, it is also possible that the owner accidentally smashed the exhaust pipe when passing through the potholed road, causing the exhaust pipe to leak and make abnormal noise, but this possibility is usually very small.