N14 select plus skip,smoke,rough idle

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Rc1234, Sep 28, 2019.

  1. Rc1234

    Rc1234 Bobtail Member

    18
    4
    May 31, 2018
    0
    started suddenly after hitting rough road..#3 injector failed cutout test,dealer replaced..no change..still rough shake at idle,lots of black smoke under load,strong fuel smell,ticking noise...
     
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  3. Bakerman

    Bakerman Road Train Member

    4,652
    8,765
    Jan 27, 2013
    Phoenix, AZ
    0
    Return fuel line blocked?
     
  4. Heavyd

    Heavyd Road Train Member

    7,454
    5,820
    Feb 4, 2009
    0
    Check basics, check your electrical connections, but it also sounds like the fuel is aerated. Fuel line on the suction side might have cracked enough during the bouncing to allow it to be sucking air now.
     
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  5. mrbamcclain

    mrbamcclain Light Load Member

    258
    116
    May 25, 2011
    Hammond, La
    0
    Swap #4 to #3 see if the problem remains. Replace the pass thru connector.
    Last time overhead was run?
     
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  6. Rc1234

    Rc1234 Bobtail Member

    18
    4
    May 31, 2018
    0
    All the above ok...suspect broken valve....
     
  7. Rc1234

    Rc1234 Bobtail Member

    18
    4
    May 31, 2018
    0
    Found broken exhaust valve...hope piston is ok...the dealer I am stuck at is unbelievably slow...more later...
     
    Bakerman Thanks this.
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