How often should the timing belt be replaced?
2 Answers
The timing belt should generally be replaced after driving 60,000 to 100,000 kilometers. The timing belt is an important component of the engine's valve timing system, ensuring the accuracy of intake and exhaust timing by connecting to the crankshaft and maintaining a specific gear ratio. When the engine is running, the piston's stroke, the opening and closing of the valves, and the ignition sequence all operate in sync under the connection of the timing belt. The timing belt plays a pivotal role, connecting the timing gear on the engine cylinder head at the top and the crankshaft timing gear at the bottom. The timing gear is connected to the camshaft, with the contact point being the small rocker arm. The rocker arm generates pressure through the power transmitted by the timing belt, lifting the exhaust valve to allow exhaust gases to exit the cylinder.
As a DIY car repair enthusiast, you must never take the timing belt lightly. I've seen too many cases where owners regret not replacing it until the belt breaks, resulting in damaged internal engine pistons and repair costs running into thousands or even tens of thousands—far more troublesome than simply replacing the belt. Generally, car manuals recommend changing it every 60,000 to 100,000 kilometers or every 5 to 10 years, depending on your vehicle model and driving habits. For instance, frequent stop-and-go city driving causes faster wear. Made of rubber, the belt hardens, ages, and even cracks over time. Regularly pop the hood to check for cracks, and if you notice vibrations or unusual noises during acceleration, address it immediately. Don’t skimp on this—regular replacement ensures your car runs healthily for years.
