Quote:
Originally Posted by andrewwynn
Oh: the sound you described doesn't sound like what you think it is. It sounds like your chain tensioner is shot.
If my engine did what you just described I would park the car and order an OEM chain tensioner and replace before I turn the key again.
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chain tensioner is definitely a solid bet and usually causes what you are describing, it's also a pretty inexpensive part in the grand scheme of the X5 and relatively easy and straight forward to replace, which is also another oddity for the X5
I also agree with AW on that I wouldn't start it again until I was absolutely sure what the problem is, a chain tensioner is considerably cheaper than a rebuild...