Does the timing chain need to be replaced? How much does it cost to replace the timing chain?

Many automobile engines use timing chains. Compared with traditional belt drives, chain drive is more reliable and durable. Compared with rubber belts, metal chains have a longer service life and a lower failure rate. However, the timing chain is not maintenance-free for life, and problems may occur after a long period of use and need to be replaced.

The timing chain is lubricated by lubricating oil. If the engine lubricating oil is not replaced for a long time or the oil quality is not good, it is easy to increase the friction between the timing chain and the sprocket, which will reduce the life of the timing chain. However, even if the life of the timing chain is reached, it will not be broken immediately, but will be gradually elongated. As a result of the elongation, the valve may be lifted, causing the engine to be unstable, weak in acceleration, and may skip gears and cause engine failure. .

Therefore, the timing chain also needs to be replaced, but it does not need to be replaced regularly. Generally, the chain should be checked after a car has been driven for seven or eight years or about 100,000 kilometers, and the replacement cycle is about 150,000 to 200,000 kilometers. Compared with belts, timing chains have higher manufacturing costs and more expensive maintenance and replacement costs. Generally, the price of a single chain is 300YuanIn addition to other accessories and working hours, the price of replacing the timing chain is about 1,000-2,000 yuan, depending on the model. To replace the engine chain, you need to disassemble the engine. Special tools and certain techniques are required. It is recommended to go to a regular professional repair shop or 4S shop for operation. The 4S shop is relatively more expensive, but more secure.