When I start the truck it runs rough until it warms up in 3-4 minutes and then it runs perfectly fine. It blows blue smoke out the tail pipe until it warms up. Why does it start rough?
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Sunday, December 2nd, 2012 AT 5:05 AM
1 Reply
DRCRANKNWRENCH
EXPERT
I would check the Idle Aitr Control Valve, IACV. It is located aon the intake manifold near the throttle body and has and electrical connector.