running rough under load

Discussion in 'Western Star Forum' started by big justin 1974, Oct 4, 2012.

  1. Starline

    Starline Medium Load Member

    357
    251
    Jun 1, 2011
    Middle Tn
    0
    I wonder when big Justin is going to enlighten us as to what the problem was.... Surely he's fixed it by now.
     
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  3. big justin 1974

    big justin 1974 Bobtail Member

    6
    0
    Dec 19, 2011
    cremona ab
    0
    With no codes showing up it was hard to diagnose.. Started to throw parts at it.. Changed fuel pump, changed filters, turbo pressure sensor with no change in the way it ran.. Popped the valve cover off and checked the injector harness.. #6 rubber seal that is in the plug was popping out and plug was filled with oil, changed harness. Also pulled all injectors.. #5 was carbon up so I replaced all injector O rings.. Glad to say she's running good again. Thanks for the suggestions guys!
     
  4. underpsi

    underpsi Road Train Member

    1,266
    292
    Sep 18, 2008
    Toronto, Ont
    0
    It didn't throw any codes with the plug popping out?
     
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