The timing belt: you know you have to replace it every 100,000 kilometres. And that it's an expensive business. But what exactly does this belt do? And why is it so important to check its wear when buying a used car?
How does the timing belt work?
A timing belt – or timing chain in some cars – simply connects the crankshaft to the camshaft, ensuring that the engine's pistons and valves work together and that the car can ‘breathe’. By transmitting power from the crankshaft to the camshaft, the timing belt plays an important role in the car's drive. Unlike the serpentine belt, the timing belt is not visible under the bonnet.
Timing belt broken – now what?
If the timing belt snaps, the crankshaft will still turn, but the camshaft will no longer be driven and the car will stop running. You also run the risk of engine damage. It is therefore advisable to keep a close eye on the condition of the timing belt and replace the belt in good time. Replacing the timing belt (or having it replaced) is not cheap and can amount to €1,000, depending on the make and type of car (and the garage where you have the belt replaced). However, an engine that seizes up is of course a much more expensive matter.
Timing chain
Increasingly, cars are being fitted with a durable timing chain instead of a timing belt. Unlike a belt, a chain will last practically the entire lifespan of a car, meaning you generally never need to have it replaced.
Occasion
Are you buying a second-hand car? Then pay close attention to the condition of the timing belt. Especially if the car has driven 100,000 km or more. Check if the timing belt has ever been replaced and how many kilometres have been driven with the belt. Otherwise, you might face unexpected and high costs very soon!
Have you ever had any bad experiences with your car's timing belt? Share your experiences with our followers by leaving a comment!
