1986 Toyota Pickup runs worse when warmed up

1986 TOYOTA PICKUP
230,000 MILES • 4 CYL • 2WD • AUTOMATIC
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JEFF888
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my truck runs good when i first start it up. but as i drive and the engine warms up it starts missing really bad. where should i start?
Sep 22, 2008 at 11:22 AM
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STRAILER
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As the engine warms the valve stems grows holding the vavle open, Remove the valve cover and check the valve lash and then get back to me. You are looking for a tight valve with little to no lash(clearance).
Sep 28, 2008 at 12:29 PM