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      02-23-2007, 02:04 AM   #203
Placey
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Drives: 08 Z4 3.0SI
Join Date: Feb 2007
Location: Upstate New York

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From what i've heard on this issue, they dont know the reason why air is getting to the lifters, however when revved and driven hard for a bit, it will bleed out and be quiet, at least until the vehicle sits overnight and will probably happen again. BMW NA has been working at finding the cause of this issue, they do have quite a number of engineers and different engine setups trying to determine the exact cause of this. Unfortunately, until they can find the cause of this, the only thing they can do is replace the lifters at this time, and the problem has been reoccuring. They dont have a guaranteed fix to this problem, therefore there arent any bulletins/service actions/recalls out for this problem. For those of you who have had the lifters replaced, BMWNA knows that they have been replaced, and documentation has been made in order to even recieve the lifters from BMW for the repair.
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