Welcome Visitor! Please take a few seconds and 81eagle
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- Mar 10, 2016
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I did timing chains on my '01 and was very satisfied the results.....for about 250mi. The engine started making a rattling sound when warm at idle. The noise continues even off idle and worst at about 2000rpm. I installed a mechanical oil psi gauge to verify oil pres was not the problem. It holds about 20lbs at idle warm and instantly hits 40+ off idle. It jumps to 55+ at cold start. I pulled the belt off to verify it wasn't an accessory causing the noise. It wasn't.
I pulled the engine to verify cam timing and no slipped sprockets. All OK. I noticed that when barring the engine over the rear cassette flops open and closed. Like the tensioner doesn't hold enough pressure on it to maintain tension. The engine also when being barred over has resistance from compression, then goes free just briefly, and this is when the cassette flops. The front cassette does not do this. You can also see where the cassette has contacted the head from the flopping action.
I feel this is my problem. I used shop air to blow into oil passage that feeds the tensioner and it is clear straight to the filter base. No restrictions found.
The engine ran absolutely flawless for those first 200mi. Any input?
I pulled the engine to verify cam timing and no slipped sprockets. All OK. I noticed that when barring the engine over the rear cassette flops open and closed. Like the tensioner doesn't hold enough pressure on it to maintain tension. The engine also when being barred over has resistance from compression, then goes free just briefly, and this is when the cassette flops. The front cassette does not do this. You can also see where the cassette has contacted the head from the flopping action.
I feel this is my problem. I used shop air to blow into oil passage that feeds the tensioner and it is clear straight to the filter base. No restrictions found.
The engine ran absolutely flawless for those first 200mi. Any input?
