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.
How does an anti drain back valve work on a timing chain tensioner?
Timing chain tensioners. An anti drain-back valve, in a quality oil filter, helps keep oil in the passages, leading to the hydraulic tensioner. It does this by blocking the return of oil through the filter, to the oil pan. Without oil in the passages, it takes longer for the oil pump to pressurize the tensioner.
What causes timing chain tensioners to jump at low mileage?
Extended oil changes combined with a weak design, may cause this engine to jump timing at low mileage. The most common symptoms are a check engine light and low engine performance.
What does a hydraulic tensioner do to a chain?
The tensioner does not apply a lot of pressure to the guide or it would wear the guide it is just to keep the chain from slapping and being noisy by pressing the guide against the chain. The face of the guide is plastic so if it were pressed tightly it would wear through in a short period.
How does oil pressure affect a timing chain tensioner?
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. Turning off the engine causes the oil pressure to return to zero.
Timing chain tensioners. An anti drain-back valve, in a quality oil filter, helps keep oil in the passages, leading to the hydraulic tensioner. It does this by blocking the return of oil through the filter, to the oil pan. Without oil in the passages, it takes longer for the oil pump to pressurize the tensioner.
Where is the oil in the timing chain?
This reservoir of oil is contained by the rubber covered metal gaskets that seals the tensioners to the block or heads. As this engine was dismantled and the timing chain tensioners removed, it was found that one the tensioners had not had the metal gasket fitted when it was being assembled.
What causes extra load on the timing chain?
The wrong oil can cause extra load on the chain and the engine will not be properly lubricated. Each vehicle manufacturer specifies a minimum API oil service rating, a recommended viscosity, and often a specific oil.