Quote:
Originally Posted by acowden
I think I know the answer, but I'll ask anyway...
1999 Carrera Cabriolet, 71,000 miles, burning oil in #3 cylinder. Often smokes (blue smoke), sometimes heavily, at startup. #3 cylinder failed compression test - visual inspection after pulling spark plug does not show any scoring. Dealer suggests it is either a bad valve guide, worn oil ring, or cracked cylinder head.
3 questions:
Any thoughts on these possibilities? Dealer has suggested least likely causes.
Are there other possible causes? Out of round cylinder, cracked cylinder!
How urgent is it to pull the engine to confirm a diagnosis and repair? How bad was #3 compression?
Thanks in advance!
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Dealer dosen't seem to be familar with weak points of this engine. Don't let them disassemble it, R&R only.