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white smoke cloud

irish81449's Avatar

Join Date: Mar 2003
Posts: 27

07-24-03, 06:04 PM   #1  
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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davo's Avatar

Join Date: Apr 2002
Posts: 2,417

07-24-03, 06:16 PM   #2  
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.

darrell McCoy's Avatar
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07-24-03, 06:27 PM   #3  
darrell McCoy
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.

Joe_F's Avatar
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07-25-03, 03:37 AM   #4  
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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