The tensioner is broken, and the car will make a harsh metal noise when accelerating. The function of the tensioner is to guide and tighten it on the timing belt or timing chain of the engine, so that it is always in the best tightening state. The tensioner is a component of the tensioner, which is in direct contact with the timing belt/chain, and is used to maintain the belt/chain with proper tension during transmission, and avoid slippage, skipping of teeth, or looseness of the belt. Phenomenon, can reduce the wear of sprockets and chains.
There is a bearing inside the tensioner. If there is abnormal noise, it indicates that the tensioner bearing is damaged, and the engine may have timing skipping, ignition and gas distribution time disorder, which affects the normal use of the car. If it is not replaced in time, it may cause engine shaking, difficulty in ignition, and failure to hit the car in severe cases. It may also deform the valve top, cause damage to engine components, and may even lock up, causing the belt to fail to drive normally and causing the car to break down.
The function of the tensioner is to adjust the tightness of the timing belt, but its life is not very long. There are many cars where the belt is not broken and the tensioner breaks first. Generally, the timing belt will be replaced when replacing it. Under normal circumstances, it is recommended to replace it every 3-5 years or about 80,000-100,000 kilometers. Please refer to the vehicle maintenance manual for the specific replacement time.
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