Your timing belt makes sure the different parts of your engine move in sync, and if it starts to fail, you’ll want to replace it as soon as possible. But what will that cost? Will your warranty help?

What Does the Timing Belt or Timing Chain Do? On a conventional piston engine — which is found in virtually all modern passenger cars — the up-and-down motion of the pistons turn the crankshaft, and ...

For your engine to start, there has to be a perfect timing for every part, especially the engine valves. Depending on the car model, other parts have to move at the same time for the engine to start.