After the timing belt is changed, it rattles and the timing belt is not aligned.

The timing belt is a rubber product with a certain service life. It will inevitably be worn out if it is running at high speed for a long time. It is also a consumable product and needs to be replaced regularly. However, the timing belt rattles after changing. This may be because the timing belt is too tight, or the tensioner is broken, the valve clearance is abnormal, or the timing wheel is deviated and loose, or the timing belt is not aligned. Lead to.

Timing belt misalignment performance

Misalignment of the timing belt will cause the engine to not work properly, causing premature or late ignition, abnormal engine noise, power drop, and fuel consumption increase. In severe cases, the valve will be broken or the piston will be damaged, causing damage to engine components and shortening the service life of the engine.

1. The timing belt deviation is small: the car is weak to accelerate and it is difficult to go uphill;

2. The timing belt deviation is large: the car has no idling speed, idling speed jitter, abnormal noise in the exhaust pipe, fuel stalling;

3. The timing belt has a large deviation: the car cannot be started, the engine has abnormal noises, and even the engine may be damaged.

Therefore, it is necessary to align the timing before installing the belt, generally align the marks on the camshaft and crankshaft pulley. The notch on the crankshaft pulley is aligned with the arrow on the positive oil pump housing, the groove on the exhaust camshaft is aligned with the convex point of the intake camshaft, and then the timing belt is installed, and the timing tensioner is rotated with an Allen key. Adjust to the best tightness, turn the crankshaft two turns to check whether the timing mark is accurate, and complete the installation if there is no error.