How often should the timing belt be replaced?
2 Answers
The timing belt should be replaced every 50,000 to 60,000 kilometers. As a rubber component, the timing belt, along with its accessories such as the timing belt tensioner pulley, timing belt tensioner, and water pump, will wear out or age with increased engine operation time. The timing belt is a crucial part of the engine's valve system, ensuring accurate intake and exhaust timing by connecting to the crankshaft and maintaining a specific transmission ratio. The upper part of the timing belt connects to the timing pulley on the engine cylinder head, while the lower part connects to the crankshaft timing pulley. The timing pulley 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, performing a lifting function.
When it comes to timing belt replacement, as a veteran driver with over 30 years of experience, I've changed it quite a few times. My experience tells me this is crucial! It should be considered every 60,000 to 80,000 kilometers, depending on the vehicle model and usage conditions. My Toyota manual recommends replacement at 70,000 km, but I usually inspect it every 50,000 km to check for cracks or slackness. Delaying it can lead to serious consequences—if the belt snaps, it can damage the engine valves, and repairs can easily cost thousands or even tens of thousands. Don't save small money only to lose big! I suggest mentioning it during every maintenance check and asking the repair shop for their opinion. Safe driving comes first—replace it early for peace of mind.
