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Old 01-23-2023, 10:40 PM   #2
slonomo
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Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
Default Re: Workhorse 350 Smoking

Typically valve stem seals will smoke on first start up then clear up as it burns the oil off. If the smoking is constant, and your oil level is correct, then it's probably broken, worn, or sticking oil rings. You could use an oil detergent, or add a few ounces of ATF to clean up gummed up stuck rings on a long shot. If that doesn't work it's time to open it up for inspection. Severely worn valve guides could cause smoking as well.
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