Quote:
Originally Posted by andrewwynn
So what are 'the symptoms':? If you hear a new noise at startup that correlates to oil pressure building… here's an example; i have M54 and when I have enough new oil on my driveway, I can either measure the diameter of the spot to decide if it's time to check the dipstick *or* i can simply count the seconds on a cold start for the lifter tick to subside.
The chain tensioner is almost identical to an hydraulic lifter; absolutely ingenious actually, so the exact same reason my lifters stop ticking after the pressure builds on a cold start up and takes longer when oil is low, will cause the chain tensioner to take longer and longer to build up the force to properly tension the chain either when low on oil or just worn out.
so; if like me you hear some lifter tick on start and especially when low on oil but suddenly one day you hear a metallic slapping or grinding sound that seems to go away right about when the lifters stop ticking, nearly 100% chance your chain tensioner failed.
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Does this also apply to the N62? This is my first X and V8 BMW, so I have no prior experience with V8 symptoms/noises.
BTW, fantastic insight!
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2004 X5 4.4 Build 01/04 Alpine White on Schwarz Dakota Leather, Anthracite Headliner
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