By doing so all the slack in the timing chain is taken out and ensures that the timing chain will not jump over spocket teeth and put the engine out of time. The timing chain tensioner is basically a hydraulic ram, when the engine is running oil pressure in the engine is fed to the tensioner and this pressure forces the timing chain tensioner piston against the moving timing chain. One of these associated components in charge of keeping a critical tension applied to the timing chain is the timing chain tensioner. The component in control of this task is the engine timing chain and the timing chain’s associated components. What does a timing chain tensioner do? For your engine to work properly it is critical that the moving parts within the engine work in perfect time with each other. The risk is that the lower hydraulic timing chain tensioner may fail, later model vehicles with the fitment of these engines have a revised timing chain tensioner which has removed this risk from the engine design.Ībove is a photo of the two timing chain tensioners, the unit on the left is the tensioner prone to failure and the unit on the right is the revised tensioner.
The engines affected are the 4 cylinder TSi engines in both 1.8 litre and 2.0 litre variations. There is an underlying issue in many Audi and Volkswagen models built between 20 that if left unchecked could result in very expensive engine damage.
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