Coil change and now no spark

Discussion in 'General' started by Dutchrudder113, Feb 11, 2019.

  1. Dutchrudder113

    Dutchrudder113 New Member

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    I have a 1971 CT70. The plug wire broke so I ordered replacement coil. I dropped the motor and changed it out. Now I'm getting no spark. I can feel a little zap from the plug when I touch it, but not enough to get a visible spark. Anyone ever run into this with after market coil and plug wire?

    Thanks

    Ramsey
     
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  3. racerx

    racerx Administrator
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    You may have a poor ground. That could be corrected by sanding the metal clean, where the ground lead attaches to the frame.

    If that doesn't restore normal spark, you may have purchased a CDI coil that won't work with breaker point ignition.

    FYI the HT lead can be repaired.
     
  4. OLD CT

    OLD CT Well-Known Member

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    You can trim the end of the old coil and re screw the cap back on. You can repair the old wire also by adding a wire splice.
    Did you buy the same ''style'' 6 volt coil?
    As in shape and size? If you bought some cheap ''ebay special'' 12v coil that does not look like the coil you removed, that may be the problem.
     
  5. Dutchrudder113

    Dutchrudder113 New Member

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    Thanks for the replies
     
  6. Dutchrudder113

    Dutchrudder113 New Member

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    Checked everything still getting just a little tingle on the spark plug. How do I repair stock coil
     
  7. racerx

    racerx Administrator
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    Need to see a detail shot, or two, to see what needs to be repaired. The location of the damage could make a difference
     
  8. Dutchrudder113

    Dutchrudder113 New Member

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    Here is some pics
     

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  9. OLD CT

    OLD CT Well-Known Member

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    That can be repaired with this kit. NGK #18083 wire repair splicer. It's around 9 bucks shipped. You might want to trim that down more to keep the repaired section inside the frame.
     
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