Re: white smoke from exhaust... - Saab 9000 Bulletin Board - Saabnet.com
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Re: white smoke from exhaust...
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Posted by Señor Don (more from Señor Don) on Wed, 9 Nov 2011 16:49:35 Share Post by Email
In Reply to: smoking while in traffic jams.., ryand, Tue, 8 Nov 2011 14:57:49
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ryand & Simon S.,

I have suggested the head gasket as a likely cause of white smoke fro the tailpipe in traffic jams. I believe ryand is seeing this tailpipe emission while the engine is experiiencing high manifold vacuum. This COULD come from leaky valve stem seals on a high mileage engine, which would suck oil in. However, ryand detects no unusual smell from the white smoke.
On the other hand, wiki answers says;

I am a highly experienced ASE certified automotive repair tech. I have over 16 years of diagnostics and repairs to my credit..I have made a very good living in the automotive business by being precise with my diagnostic procedures....I have worked for 3 of the largest rental vehicle companies in the country.... I have diagnosed and repaired an estimated 200 vehicles to date with the white smoke issue... every vehicle that i mentioned had engine coolant/antifreeze entering one of the combustion chambers in the engine... Most of these vehicles had a damaged head gasket(s).. the most common causes of this issue that i have detected over the years are due to improper maintenance of the engine cooling system, severe overheating of the engine, improper tightening of the cylinder head(s) during an engine overhaul,or some other type of repairs that required the head to be removed and also defects in manufacturing of the gasket...

A simple check of oil and coolant levels will point to the area to be examined first.


Happy SAABing



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