Quote:
Originally Posted by A B Able Truck
- It would help if we knew;
- Year, Model, Engine, Miles
- How are your CCV diaphragms?
- CCV hose condition (a small leak can act just like bad diaphragms)
I have a problem with carbon buildup on my pistons that I'm trying to get clean. My engine sucked oil for so long that my piston tops look like a mountain range. You need to check the obvious and work from there.
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Sorry, I am the OP on this thread, but realize it's been a while since I participated. My car is a 2006 BMW X5 4.8is and has 120,000 miles. I've had the problem since probably 90,000 miles. I have already replaced the CCV diaphragms, and when I did there was nothing wrong with the old ones. I don't have hoses going to the ccv's, mine are the ones that install right into the valve cover.