When to replace timing belt and gear set?
When to replace timing belt and gear set? Don’t take a chance reusing an old timing belt, chain or gear set. A high mileage timing chain that has stretched and is loose can’t maintain accurate valve timing and should be replaced if play exceeds specifications. The camshaft and crankshaft sprockets should also be replaced along with chain. Do you have to be dead on with timing belt alignment? Because modern vehicles use so many electronics to control the engine with things such as crank and camshaft timing sensors, technicians need to be, as we say in the industry, “dead-on” with...