1990 Chevrolet Truck Repair Question
Topics covered: Smoke, Valve stem.
Mileage: 200,000 miles.
Mileage: 200,000 miles.
Asked on September 13, 2011
My truck runs good when first started then smokes after 5 minutes
My 1990 Chevy 1500 was parked since 2008
Asked by vern254Answer
Replied on September 13, 2011
Would you say smoke is white,gray/blue or black?
Replied on September 15, 2011
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.