Quote:
Originally Posted by Monooxide
The HG can fail and still yield good compression numbers. The HGs main job is of course to seal off the combustion chambers but also remember that it divides off the oil galleys and coolant passages from the block to the head. If one of those were to not seal from coolant passage to oil galley this would give you the exact issue.
Be sure coolant isn't getting into your oil as this can damage bearings. Also, if there isn't coolant in the oil really this would point even more to the above mentioned problem because the Oil Pressure will be higher than the coolant therefore the oil will flow from the oil galley to the coolant passage and the coolant wouldn't be able to flow into the oil galley.
Good luck.
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Thanks for the reply. I will drain my oil and see if it has any coolant or looks milky in anyway.
Let's say the oil is fine. Are you still going with a bad HG? Are you able to rule out that it's a bad turbo?