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Cm 870 cummins

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by cabela, Mar 1, 2020.

  1. Mar 1, 2020 #1
    cabela

    cabela Bobtail Member

    2
    1
    Jun 18, 2012
    0
    07 Piterbuilt cm 870 rough idle and misting
     
    cabela, Mar 1, 2020
    cabela, Mar 1, 2020
    #1
    truckdriver31 Thanks this.
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  3. Mar 1, 2020 #2
    truckdriver31

    truckdriver31 Road Train Member

    6,988
    8,343
    Sep 18, 2013
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    did you check fuel filters. whens last time changed. could be clogged or waxed up
     
    truckdriver31, Mar 1, 2020
    truckdriver31, Mar 1, 2020
    #2
  4. Mar 1, 2020 #3
    tnevin225

    tnevin225 Road Train Member

    1,166
    1,600
    Jan 1, 2014
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    Might want to go over to Facebook and join the Cummins Problem Solver Group, Thy got some good people over there to help with problems just like this. I would start by getting a laptop hooked up and run an Injector test on it first thing and check for codes.
     
    tnevin225, Mar 1, 2020
    tnevin225, Mar 1, 2020
    #3
  5. Mar 1, 2020 #4
    EtherOrBroke11

    EtherOrBroke11 Bobtail Member

    21
    12
    Jan 17, 2020
    0
    It could be one of the timing or fuel metering solenoids on the IFSM. But like tnevin225 said hooking up insite will help aid in diag
     
    EtherOrBroke11, Mar 1, 2020
    EtherOrBroke11, Mar 1, 2020
    #4
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