How do I know if my cambelt needs replacing?
Visual Check
Another way to check whether your cambelt needs replacing, is to take a look at the belt itself. If it is becoming worn, the belt will appear to look glazed or glossy on the underside. This means the rubber is getting hard and will not provide the flexibility the belt needs.
Do Cambelts really need changing?
Unfortunately, there is no set time that cambelts need changing but most vehicle manufacturers will advise on either mileage or time, depending which comes first. ... Over time the cambelt will stretch which will cause the engine timing to become delayed.