What is the lifespan of the timing chain for the third-generation EA888 engine?

[VanIris]

The timing chain of the third-generation EA888 engine needs to be replaced after 60,000 kilometers. This is because after 60,000 kilometers, the tensioner may lift, which can lead to timing chain misalignment, skipped teeth, and even risks such as piston-to-valve interference. Relevant information about the timing gear is as follows: 1. Introduction: The timing gear is a gear in mechanical devices that serves to position the time scale for completing related control functions. Timing gears are used in systems where sequential relationships are crucial for mechanical functions, such as the intake and exhaust systems in internal combustion engines and clock mechanisms. 2. Transmission methods: There are three types of timing gear transmission methods: chain drive, belt drive, and gear drive.