How often should the engine timing chain be replaced?

[DiTaylor]

The timing chain (belt) should be replaced every 100,000 kilometers. Here is the relevant information: 1. Main function: The main function of the engine timing belt is to drive the engine's valve train to open or close the intake and exhaust valves at the appropriate time, ensuring that the engine cylinders can normally intake and exhaust. 2. Service life: The service life of the timing chain is greatly related to the engine oil used for regular maintenance. It offers more reliable transmission, better durability, and requires a longer maintenance cycle. The timing chain does not directly rub against the sprocket but is lubricated by the engine oil. However, if the vehicle is frequently driven at full load and high speeds, it is advisable to inspect it every 5 years or 75,000 kilometers. If there is severe wear or other damage, it should be replaced promptly.