When I start the truck it runs rough until it.

Tiny
ANONYMOUS
  • MEMBER
  • 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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Sunday, December 2nd, 2012 AT 5:05 AM

1 Reply

Tiny
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.
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Sunday, December 2nd, 2012 AT 5:33 AM

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