Mechanics

NISSAN TRUCK BLUE SMOKE PROBLEM

1984 Nissan Truck • 260,000 miles

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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December 2, 2012.



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.