white smoke cloud


Old 07-24-03, 06:04 PM
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white smoke cloud

I have a 93 chev cheyenne 1500 pick-up. 4.3L 6cyl 80K. Auto.
Problem is this. When start-up there is a white smoke cloud from exhaust. It lasts only 2-3 secs. Only at start-up. Not at acceleration, not on freeway, not at idle. Thinking head gasket but no water in oil at oil change, no water on dip stick.
Any guesses ?? Thanx.
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Old 07-24-03, 06:16 PM
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Location: Pittsburgh,Pa
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Sounds like coolant but could be oil or trans fluid burning also.Monitor these 3 fluids and see which is going down.If it's coolant then most likely head gaskets or cracked head.
Old 07-24-03, 06:27 PM
darrell McCoy
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Some of those 4.3's were blessed with bad valve guide seals from day one. Some smoked from day of purchase, thinking there were some TSB's on them earlier, but as Davo recommended keep eyeball on fluids. Some were also known to leak coolant at intake.
Old 07-25-03, 03:37 AM
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I agree with both posters. "Chevrolet" engines like this have poor oil control, I'd lean to valve stem seals as noted.
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