Why is there an abnormal noise in the engine?
2 Answers
Abnormal noise in the engine may be caused by engine oil. Causes of abnormal noise: Abnormal noise in the engine indicates that the technical state of a certain mechanism has changed. It is mainly caused by excessive wear of some parts or improper assembly and adjustment. The transmission has many parts, and the causes of noise are also relatively complex. Solutions: Abnormal noise can also indicate that the engine may suffer accidental damage. Therefore, when abnormal noise occurs in the engine, it should be repaired in time to prevent the fault from expanding. If the abnormal noise is inside the engine, most car owners cannot solve it by themselves, and it is best to send it to a factory for inspection and repair. If the transmission noise is obvious, it is still recommended to send it to a professional repair shop to check the faulty parts and then replace them.
If your engine makes abnormal noises, there are quite a few common causes. You can make a preliminary judgment by listening to the sounds: a high-pitched squealing noise is usually a belt issue, such as a worn or loose timing belt or accessory belt causing friction during operation; a dull noise may indicate a worn water pump or alternator bearing, especially noticeable during acceleration; a metallic tapping sound could mean a loose chain system or failed tensioner; if there's a humming noise, it might be due to insufficient oil, causing excessive friction between internal components due to poor lubrication; ignition system problems like carbon buildup on spark plugs or incorrect timing can also cause knocking sounds resembling crackling collisions. Ignoring these minor issues can lead to major repairs—for example, a broken belt can damage the engine. In cold winter weather, belts harden and are more prone to noise, so checking belt condition and replacing them promptly can save you money and hassle.
