Date: Wed, 13 May 1998 16:27:07 -0700 From: Justin VanAbrahams <jvanabranopsamnet> Subject: Re: exhaust / braking problems
eb01013nopsamx.net wrote: > > I'm having this problem and hope someone out there might have some idea > of what's going on..its happens when I have to make a sudden stop at > lights, I get a huge blue cloud comming out from the exhaust...yes the > exhaust, not from the brakes. This does not happen all the time but just > some of the times when I have to suddenly step on the brakes abit more > than usual. Yes it smells terrible like burning oil and is very > noticeable, any ideas?? Vacuum leak maybe?, but where and how? I have > a 83 Turbo 900 Saab and everything else seems to work ok. THANKS. ERIK The oil seals in your turbo are probably shot. When you are driving oil is moving rapidly through the engine and being forced along it's path, so there isn't much time for oil to seep past the seals, and that which does get past is quickly burned off and leaves little trace in the exhaust. When you stop, the turbo suddenly spins down, some backpressure is generated, and oil flow slows down... At this point, it seeps past the seals and gets burned off on a very hot turbo. Blue smoke is always caused by oil. It could be in the engine, but more likely it's the turbo. Whatever it is, is isn't vacuum. You are burning oil... -Justin
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