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Running ruff

Discussion in 'Trucks [ Eighteen Wheelers ]' started by topcat1974, Sep 3, 2013.

  1. Sep 3, 2013 #1
    topcat1974

    topcat1974 Light Load Member

    119
    31
    Sep 12, 2010
    Charlotte, NC
    0
    I have a cat 6nz that seems to be running very ruff. I'm way past due on a pm will that cause the engine to run ruff??? Please give me a lil info thanks
     
    topcat1974, Sep 3, 2013
    topcat1974, Sep 3, 2013
    #1
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  3. Sep 3, 2013 #2
    Casual Trucker

    Casual Trucker Medium Load Member

    495
    326
    Sep 7, 2012
    0
    Most likely water in the fuel filter..don't change the fuel filter before doing a PM unless you have to.Always change your filters during a PM this way you know how many miles are on the filters not just Guess.
     
    Casual Trucker, Sep 3, 2013
    Casual Trucker, Sep 3, 2013
    #2
    topcat1974 Thanks this.
  4. Sep 3, 2013 #3
    topcat1974

    topcat1974 Light Load Member

    119
    31
    Sep 12, 2010
    Charlotte, NC
    0
    Ok will do
     
    topcat1974, Sep 3, 2013
    topcat1974, Sep 3, 2013
    #3
  5. Sep 15, 2013 #4
    Shade Tree

    Shade Tree Light Load Member

    177
    44
    May 15, 2011
    Galloway Ohio
    0
    Top CAT: If the fuel filters are plugging up because of more dirt in the fuel system it will cause a drop in fuel pressure. You didn't say how many miles you had on the truck but the fuel lines can swell shut from heat and cause a drop in fuel pressure. You can remove the inlet lines and run a #2 phillips down inside the line and if it is swollen the screw driver will stop from the swelling of the rubber inside.
     
    Shade Tree, Sep 15, 2013
    Shade Tree, Sep 15, 2013
    #4
  7. Sep 15, 2013 #5
    topcat1974

    topcat1974 Light Load Member

    119
    31
    Sep 12, 2010
    Charlotte, NC
    0
    I have like 850,000 on it. But I'm wayyyy over on my PM
     
    topcat1974, Sep 15, 2013
    topcat1974, Sep 15, 2013
    #5
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