Light blue smoke? ->more - Saab General Bulletin Board - Saabnet.com
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Light blue smoke? ->more
Posted by bazil burns (more from bazil burns) on Mon, 10 Dec 2001 10:30:48
In Reply to: Engine sludge?, Nick [Profile/Gallery]
, Mon, 10 Dec 2001 03:40:48
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If that was coming out the tailpipe, you've got more problems than sludge. The only thing that will cause blue smoke out the tailpipe is oil being burned. It's either a problem with the rings/cylinder bore, or the valve stem seals. If you're getting sludged oil, I'd think it'd be the rings, letting excessive junk blow past into the crankcase, sludging the oil and at the same time not demonstrating proper oil control and allowing some to be burned. Dirty oil won't cause light blue smoke out the tailpipe, ever. In fact, an engine is more likely to burn clean oil than dirty oil, since oil thickens as it is cooked inside an engine. Don't let them try to BS you on this one, and best of luck.
--bazil
'85 SPG (152k miles, and no blue smoke or sludge)
posted by 24.52.1...
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