3406b laggy power

Discussion in 'International Forum' started by Prodirt6000, Jun 19, 2016.

  1. swaan

    swaan Road Train Member

    2,943
    4,371
    Jul 12, 2009
    BC canada
    0
    A stock 425 b will be 18-21 psi .
    Your not really out much if any .

    Is probley just the way it is. You want more bottom end grunt then adjust your afc for bit more fuel. Don't go crazy thou as it will smoke too.
     
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  3. oldkitty

    oldkitty Bobtail Member

    I have a 3406b no turbo pressure gauge. How can i check for leaks in the air to air and where can i install a gauge?
     
  4. Prodirt6000

    Prodirt6000 Bobtail Member

    33
    3
    Aug 30, 2015
    0
    Got a dealership to diagnose the problem. It was the fuel pump directly underneath the injection pump. They rebuilt it and truck has instant response. Hardly charged anything to fix it.
     
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