The timing belt is a toothed belt and plays an important role by synchronising the rotation of the crankshaft and the camshaft, keeping engine valves open or closed during the intake and exhaust strokes of each cylinder. In some makes and models, the timing belt also drives the water pump.
As with all components, timing belts wear out over time and need to be replaced when damaged or at the manufacturer’s specified recommendations. If it isn’t replaced when required, it can stretch, slip or break and cause major damage to your engine that would be much more expensive to repair than replacing the timing belt. If you notice any of the following signs, it may be time to replace your car’s timing belt: