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97 883 sporty weak spark

Discussion in 'Motorcycle Tech Talk' started by td5239, Mar 31, 2012.

  1. td5239

    td5239 New Member

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    Hi, i'm new to bike-talk so please be patient. I recently purchased a 97 883 sportster. When riding it home 5 miles from where i got it the thing quit on me. I pulled the plugs and found it to have very weak spark so i bought NEW plugs and no change. Next i bought a NEW harley coil and NEW wires and still no change. :mad: I was told it was probably an ignition module so back to the harley dealer i went and got a NEW one. Still no change have very weak spark. :banghead: At this point i have swagged a coil, plugs, wires, and ignition module at this thing. I'm at my wits end. :mad: Any help would be GREATLY appreciated. Thanks
    Last edited: Apr 1, 2012
    td5239, Mar 31, 2012
    #1
  3. cowboy

    cowboy Moderator Staff Member

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    I would start by checking & cleaning all grounds , also how new is the battery ?
    cowboy, Mar 31, 2012
    #2
  4. td5239

    td5239 New Member

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    The battery is good stays steady at 12 .4- 12.5 as for the grounds i will look at them next. Thanks for the help cowboy.
    td5239, Apr 1, 2012
    #3
  5. Lucifer

    Lucifer Well-Known Member

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    What's the voltage with the engine running??
    Lucifer, Apr 1, 2012
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  6. baggerpaul

    baggerpaul Well-Known Member

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    behind the timing cover you will find the pick up that sends the rpm signal to the module it is prob all melted very common on the sporty for it to melt . if the pick up is weak . it will not send a good signal to fire the coil also look at the pick up connectors before replace ment the run along the frame and hacve a weather pack connector they sometimes get all sulfated hope this helps. all the best keep the shine side up:cool:
    baggerpaul, Apr 1, 2012
    #5
  7. Lucifer

    Lucifer Well-Known Member

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    Never even thought of that...the pick up sensor is the only thing he hasn't replaced...a lot of people think it either works or it doesn't....
    Lucifer, Apr 2, 2012
    #6
  8. td5239

    td5239 New Member

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    A BIG THANK YOU TO ALL WHO HELPED ME! It was the ignition pick-up sensor that was faulty.
    td5239, Apr 4, 2012
    #7
  9. baggerpaul

    baggerpaul Well-Known Member

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    Awesome glad we could help .did ya set it in the same spot when ya replace it .?
    baggerpaul, Apr 4, 2012
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  10. cowboy

    cowboy Moderator Staff Member

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    Good to here your up & running :D
    cowboy, Apr 4, 2012
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