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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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If you suspect turbo seals or valve guides as the mystery oil source, look before and after the turbo to help narrow it down. Airbox oil can be from crankcase blowby (guides/rings) or overfilled oil tank via the vent hoses.

If you don't see oil in the air box, and/or the plumbing post-airbox or before the turbo exhaust side, but you do see it post-turbo conmpresssor in the up-pipe/intercooler, then suspect the seals or scavage pump operation as already mentioned.

My turbo spits a little oil, as evidenced by a small pool sitting on top of the up-pipe to the IC. There was a discussion thread on this awhile back, and it seems that a high percentage of people see a little oil coating things and consider it normal. But when you start seeing clouds of oil smoke, it's gone beyond the acceptable norm.

Embarassing when people give you the thumbs up for the beautiful car, only to gag in your wake.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 11-30-2009, 02:41 PM
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