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Old 03-04-2009, 01:39 PM   #14
andya
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Member#: 200134
Join Date: Jan 2009
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Mick, I totally agree with you on the ring butting with that gap, the engine would have to get very hot to cause such an incident. It is possible that the pcv valve is bad, causing excessive crank-case pressure under boost, but there would be oil everywhere. The valve stem seals going out is questionable because then the oil issue would be worse under deceleration rather than boosting. This leads to the piston/rod area and the flat section on the ring
What caused this if the gap is correct and the ring moves freely in the groove? This flat section would surely cause improper ring seal and amplify oil consumption.... But why suddenly after so many miles?
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