New tensioner, original chain.įirst check the timing chain for a failed tensioner or a stretched chain. I suspect it has slipped to notch 7 and will check when I next get under the car. I'm currently at 118K km with adaptation of -1.03. At both 89K and 102K km I was still in notch 6(clip) with adaptation of -.86 and -.9 respectively. By observing the spring clip position you can determine the actual tensioner position when under operating conditions.Īs I get more data points I should be able to predict the exact amount of tensioner extension from the cam phase adjustment.Īs I get more data points I should be able to predict the exact amount of tensioner extension from the cam phase adjustment.Another data point for you. So it is very possible to observe the extension and assume that it is less than it actually is in operating conditions. So when you observe the tensioner position with the engine turned off the tensioner isn't always at the furthest extension as when the engine is operating. The tensioner extends by both spring and oil pressure. There is some excellent detail on how to measure extension in the link Smac770 provided. Looking at your picture I see that your spring clip is in the 8th notch and it is fully extended. There are two "dead" notches between where the clip bottoms out on the adjuster body and the remaining notches extend out of the tensioner. I have been compiling data so I can correlate the spring clip position with the cam phase adjustment. Thanks! That is exactly the information I was looking for.
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