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2006 IH ISX what should the fuel pressure be?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Bad Monkey, Jul 31, 2014.

  1. Jul 31, 2014 #1
    Bad Monkey

    Bad Monkey Medium Load Member

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    Jul 18, 2012
    Goshen, IN
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    Hi guys. I recently got a code for low fuel pressure on my truck, I want to check both the low and high pressure pumps. I see there are two quick connect ports, are they standardized fittings as in will napa have a fuel pressure tester for it? And what should the pressure be? I don't have any power or driveability problems i just want to know which one to replace. Thanks guys.
     
    Bad Monkey, Jul 31, 2014
    Bad Monkey, Jul 31, 2014
    #1
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  3. Jul 31, 2014 #2
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Those quick connects are "compucheck" fittings. I don't know if NAPA will have connectors for them. The fuel pressure test port is down by the main filter. If your engine is an EGR version your fuel pressure should be 275-300 psi. The top test fitting is for checking fuel inlet restriction.
     
    Heavyd, Jul 31, 2014
    Heavyd, Jul 31, 2014
    #2
    logtrucker25 Thanks this.
  4. Jul 31, 2014 #3
    Bad Monkey

    Bad Monkey Medium Load Member

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    Jul 18, 2012
    Goshen, IN
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    thanks for the info sir.
     
    Bad Monkey, Jul 31, 2014
    Bad Monkey, Jul 31, 2014
    #3
  5. Aug 1, 2014 #4
    bigguns

    bigguns Road Train Member

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    Jun 13, 2013
    Omega,GA
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    Don't get way ahead of yourself. You may only need to change fuel filters.
     
    bigguns, Aug 1, 2014
    bigguns, Aug 1, 2014
    #4
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