Quote:
Originally Posted by Baby Unicorn Taco
Old thread yes, but, anytime you hear knocking check the 4 bolts on the water pump pulley. If one or two of them are a little loose, it will knock.
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... check also 8 bolts on the crank pulley. 4 out of 8 on my X5 4.8 were loose, not sure how, but they were