How often should the engine timing chain be replaced?

[VanJanelle]

The engine timing chain is maintenance-free for life. Related introduction: 1. Introduction: The car timing chain is the timing chain. The main function of the engine timing belt is to drive the engine's valve train, ensuring that the engine's intake and exhaust valves open or close at the appropriate time to allow the engine cylinders to properly intake and exhaust air. In some models, such as the Volkswagen Jetta (EFI), Santana 2000, Bora, Audi, etc., the timing belt also drives the water pump. 2. Safety: For all engines, the timing belt must never skip teeth or break. If skipping occurs, the engine will not function properly, leading to symptoms such as unstable idling, poor acceleration, or failure to start. If the timing belt breaks, the engine will immediately shut down. In multi-valve engines, this can cause the pistons to bend the valves, and in severe cases, it may even damage the entire engine.