Quote:
Originally Posted by KingOfJericho
N55 has had pump failures as well.
I've had my car for 2 years. During year one I had the 3rd brake light break and fall out and the HPFP shit the bed. It was great for the next 6 months then it started hesitating a bit under WOT in high gears. I finally took it to the dealer and they informed me that I had carbon buildup on the valves and they had to sandblast them clean. The latter is the one that really concerns me - if the car has carbon buildup every 15-20k miles, that would be a costly maintenance issue out of warranty. It really sucks because I ADORE this car.
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I remember reading similar stories about Carbon build in Turbocharged engines.. I also read that you can prevent this if you push the card hard every week when you have a half+ tank.