Volvo 770 01,Cummins Isx,low fuel pressure goin' downhill & idle (air in fuel lines)

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Narcis.M, Jul 20, 2011.

  1. AZURESUNEXP

    AZURESUNEXP Bobtail Member

    9
    6
    Feb 23, 2012
    0
    Did you figure out what was wrong with your fuel system, I changed my shut off valve solenoid and still got the same fuel pressure value too low when hot outside...........
     
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  3. Cummins600

    Cummins600 Bobtail Member

    26
    8
    May 18, 2011
    Pa
    0
    Hi there,

    Sorry this is such a late post. You need to rebuild the entire fuel shutoff valve. A rebuild kit should include a 1/4'' base plate that has a washer, o-ring, gasket, and a flat plate. That plate will wear over time and will eventually leak fuel. Hope this helps. This finally fixed our ISX.
     
    AZURESUNEXP Thanks this.
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