What is one of the key purposes of a vehicle’s timing belt?

The key purpose of a vehicle’s timing belt is to synchronize the engine's crankshaft and camshaft. This synchronization is critical for proper engine operation, as it ensures that the engine's valves open and close at the correct times during each cylinder's intake and exhaust strokes. If the timing belt fails or is not properly maintained, it can lead to the engine running poorly, reduced performance, or even catastrophic engine failure, as the pistons could collide with the valves. By maintaining the timing belt in good condition and adhering to the manufacturer's recommended replacement intervals, vehicle owners can help ensure the engine operates smoothly and efficiently.