What does oil pressure do to the timing chain?
What does oil pressure do to the timing chain? Timing chain tensioners. The oil pressure of the engine hydraulically operates most timing chain tensioners. When the engine starts, oil pressure allows the tensioner to push the guide against the chain and remove slack. Why did timing chain tensioners fail on my car? Since the timing chain tensioners failed prematurely ( it must be prematurely or it wouldn’t be covered by the warranty ), it can be argued that the chain of destruction that destroyed the engine 2100 miles later started when the car was under warranty and the oil pressure...