Possible causes
Interval by mileage and age
The manufacturer sets the interval in kilometres and years. The rubber of the belt ages even without high mileage, so both limits count. If the history is unknown, plan the replacement straight away.
Idlers, tensioner and water pump
The belt works together with the idlers and tensioner, and on many engines the timing drive also turns the water pump. Their wear can damage a new belt, so the kit is chosen for your specific engine.
Signs of chain wear
A stretched chain can rattle on a cold start, cause camshaft timing errors and rough running. A chain lasts longer than a belt, but not forever.
What to tell the mechanic
- When and at what mileage the timing drive was last replaced, if there are records.
- Whether there is noise, whining or rustling from the front of the engine.
- Whether there are oil or coolant leaks near the timing drive.
What you can do
If the due date is unknown or has passed, do not put off the replacement. Call us with the make, model, engine and mileage, and the mechanic will tell you which kit your engine needs.
Where the check starts
The mechanic finds the exact cause during the inspection.
Frequently asked questions
Can the belt be checked by eye?
Cracks and wear are sometimes visible, but ageing inside the belt cannot be seen. That is why the manufacturer's interval is followed.
Should the water pump be replaced with the belt?
If the pump is driven by the timing belt, it is often replaced at the same time to avoid dismantling again. The decision depends on the engine and the condition of the part.