Quote:
Originally Posted by Mark M
OneInTheory.......Can you elaborate?
How did you know there was buildup? Did you feel knocking, loss of power, Check engine light? What was your mileage?
Was there a BMW service bulliten for this? If so do you have a description of work performed?
Thank you.
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loss of power, CEL. first time, approximately 20k. second time, approximately 25k.
no bulletin, they took the top half of the engine apart. i got new plugs, new injectors, had carbon buildup cleaned out of the intake mani and cylinders 5 & 6, and the obligatory new HPFP. i think there were a couple more things, but i don't have the record in front of me. they might have had to send the head off the second time to be remachined, but I'm not positive. ugh.