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940 Turbo blowing smoke 900 1996

posted by  kev on  Wed Feb 27 11:08 CST 2002
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last visit: Fri Aug 7 11:21 CST 2009
[RELATED]

A friend of mine owns 1996 940 turbo wagon, equipped with B230FT engine. It's suddenly started blowing blue-ish smoke, not long after it's started, which gets worse.

I thought 'must be the turbo'. So took hose from intercooler to turbo off, expecting to find front of turbo, and the hose full, of oil - but nothing - all dry. Also, the impeller (or is it turbine?)shaft is fine, and no bits of aluminium casing everywhere!!

So maybe head gasket? Did compression test, all ok and even. Pressurised cooling system - again ok. And no water loss. Spark plugs ok as well. No mis-fire, doesn't overheat, runs fine - for now! Obviously something wrong though. Could head gasket have failed, from oil way to cylinder, and oil coming through exhaust?

The only other thing I noticed was faint smoke coming from where back of turbo meets exhaust downpipe. I notice oil feed to turbo close by.

Head gasket or turbo, head gasket or turbo........or something completely different???





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