my truck runs good when first started then smokes after 5 minutes

1990 CHEVROLET TRUCK
200,000 MILES
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VERN254
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My 1990 Chevy 1500 was parked since 2008
Sep 13, 2011 at 8:24 PM
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DOCFIXIT
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Would you say smoke is white,gray/blue or black?
Sep 13, 2011 at 8:40 PM
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VERN254
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The smoke from my truck is gray
Sep 14, 2011 at 1:54 AM
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DOCFIXIT
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That would be oil was truck started and run periodacaly? if no then good chance valve stem oil seals dried and cracked allowing oil into cylinders . And with mileage valve guide wear and seal failure is the cause of smoke.
Sep 15, 2011 at 2:00 PM
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