The abnormal noise of the cold engine belt and the car is a common problem. Many abnormal noises are not very serious and are not caused by major faults. For example, some resonance, some interior trim panels are loose, or bolts fall off, rubber pads are aged, suspension ball joints lose lubrication, etc. Although many of the causes of the abnormal noise are not so serious, there are also some abnormal noises caused by serious problems. Next, let's take a look at the abnormal noise of the cold engine belt with Xiaobian.
Tiếng ồn bất thường của dây curoa động cơ lạnh: tiếng ồn bất thường do hỏng dây chuyền
One kind of abnormal noise can not be ignored, because it is likely to break down the car without asking. Generally, the whim that causes serious problems often occurs in the engine. When the engine has obvious "clatter" sound of chain grinding iron shell, it is likely to be caused by poor chain working conditions. We know that the timing system is generally driven by the crankshaft through the timing chain (timing belt) Drive the camshaft on the cylinder head, and then drive the tappet by the camshaft. The tappet is directly above the valve to make the valve move up and down, and finally realize the opening and closing of the valve. The timing system of the engine is divided into chain and belt. The timing belt has service life and needs maintenance and replacement when it reaches 60000 80000 km. The timing chain does not have to worry about the problem of service life, but it is not easy to relax, because there are hidden faults.
In other words, although the service life of the timing chain is longer than that of the timing belt, this does not mean that the timing chain will not fail. Moreover, although the wear or elongation of the timing chain rarely occurs, there are also faults caused by new car assembly errors and other reasons. Therefore, there are also many "winners".
Tiếng ồn bất thường của dây curoa động cơ lạnh: tiếng ồn bất thường do khởi động nguội
When the car starts cold, there is a strong "clatter" abnormal sound, like the sound of iron chain grinding metal. At this time, the timing chain is more likely to fail. The timing chain may become loose due to wear or elongation or the failure of chain tensioner will make the tensioner lose its tensioning function. If the timing chain is too loose and abnormal noise is not paid attention to, and the timing chain jumps or breaks, the problem will be serious. It will not only cause ignition timing error, serious car breakdown, or even top the valve or piston.
Nếu có tiếng ồn khởi động nguội bất thường do xích có vấn đề, xích dễ bị nhảy răng, gián đoạn thời điểm đánh lửa, tăng tiêu hao nhiên liệu, giảm công suất và các lỗi khác nếu xe tiếp tục chạy mà không đề nghị. Khi nghiêm trọng hơn, xe sẽ không nổ máy được. Nếu lỗi xích nghiêm trọng và bị đứt, xe sẽ bị rung lắc và nhanh hỏng. Trong trường hợp nghiêm trọng, van sẽ bị hỏng và động cơ sẽ bị hỏng nặng.
Therefore, whenever the car can hear the strong "clatter" friction sound of the engine when it is cold started, we should first eliminate the possibility of the failure of the timing chain or chain tensioner, because the timing chain plays too much role in the engine and can not appear any abnormality. We should always take precautions. The above is the content of the abnormal noise of the cold engine belt introduced by Xiaobian.
