Hope I guessed right, turbo looks so clean... - Saab 9000 Bulletin Board - Saabnet.com
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Hope I guessed right, turbo looks so clean...
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Posted by RayF (more from RayF) on Thu, 17 Apr 2014 13:34:26 Share Post by Email
In Reply to: Massive sudden oil burning problem..., RayF, Mon, 14 Apr 2014 17:15:48
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Finally got the old turbo out of the car. It's hard to think of it as the source of the big oily smoke cloud I'm getting.

It's a clean whitish color inside the hot side, wheel and all, as is the inside of the exhaust manifold above it, and of the down pipe below it. Looks like the residue from a dry fire extinguisher.

Obviously it's as hot as a forge so I wouldn't really expect any oil to survive in it looking like oil; maybe the white is the residue left as oil vaporizes.

It does have a little end-to-end play, felt while holding both wheels and pushing. No radial play.

The "new" one, from 85,000 mile car, has a black sooty look in its hot-side interior. No play, axial or radial.

Before I make a complete fool of myself I'm going under the car with a light to see if the oil pressure sender could be whizzing a stream of oil down onto the cat and exhaust. But doesn't seem to fit my symptoms, I haven't seen any oil dripping, and the blue haze was starting soon after startup, I would have thought before the exhaust could be hot enough to make a vapor.

I have to admit I've never actually seen if it's coming out of the tail pipe or from below. At lights, it has been coming from below some but I thought of that as from a leaky flex pipe I need to replace soon.

Valve cover gasket is not a suspect.

posted by 71.173.8...


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