96 FXSTC starts on front cylynder then...

Discussion in 'Softail Models' started by Brainj, Sep 4, 2011.

  1. Brainj

    Brainj Member

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    (EDIT) ! My 96 FXSTC will intermittently run on 1 cylinder. The front cylinder always fires but the back will go in and out. I replaced the plugs and wires.
    It will start on the front cylinder, then the back will kick on after a while. then the back will go out again. Has anyone had this problem? Please help.


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    Last edited by a moderator: Sep 4, 2011
  2. HDDon

    HDDon Experienced Member Contributor Retired Moderators

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    Have you changed from the stock duel fire ignition? Has anything been done to the bike recently?
     
  3. Brainj

    Brainj Member

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    The engine is stock.
     
  4. glider

    glider Veteran Member

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    Have you checked the ignition coil yet?
     
  5. Brainj

    Brainj Member

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    It was tested and was good.
     
  6. Hoople

    Hoople Account Removed

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    When it goes out, how long does it remain out. How did you determine it is the rear that goes out.
     
  7. Brainj

    Brainj Member

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    It goes out for about 3 minutes then on for a while then out for a few minutes. it will start on 1 cylinder then the front will kick in. The rear is cold until it kicks on.
     
  8. HDDon

    HDDon Experienced Member Contributor Retired Moderators

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    Running for three min, are you fouling the rear plug?
     
  9. glider

    glider Veteran Member

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    You have 2 into 2 exhaust on that bike from your picture. Try covering the rear exhaust pipe when it's not firing and hot and see if you can feel the compression from that cylinder or if it's lacking. Possibly a hanging valve.
     
  10. Hoople

    Hoople Account Removed

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    Save me the trouble of looking it up. :)
    Would you know if your ignition system (which you said is factory STOCK) is single fire or dual fire,,, And do you have a stand alone CAM trigger, CRANK trigger or Both.