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Thread: 250R CDI trouble???

  1. #1
    Join Date
    Jul 2004
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    Ontario, Canada
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    250R CDI trouble???

    I just picked up an 86 250R and I can't seem to get spark...well consistent spark. It probably will spark once every 10 to 15 kicks. The guy I got it from put a new stator and pick up in it so I don't think that this is the problem. The wiring harness is kinda messed up but I checked it and it to the wiring diagram and it is fine (at least the ignition is). I have a feeling that it's the CDI. Does anyone know how I can check or know where I can get info on how to check it with my volt meter and what type of readings I should get?
    Thanks for the help.

  2. #2
    wanta86r's Avatar
    wanta86r is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Nov 2004
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    mn
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    i had the same problem with a 1986 250r i picked up a few years back, i would check the coil and plug wire first, it totally cured my problem. If the wire harness is that bad you might want to consider finding a nice used one on ebay while you still can

  3. #3
    3 or die's Avatar
    3 or die is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Jan 2004
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    I had a long, drawn out dramma with that. If they would just stop sparking all together it would help. I switched all that stuff, and it ended up being a bad flywheel. A factory honda book can help with testing. I dont think a normal ohm metor will work. I just kept swaping stuff till it was fixed. It wasnt cheep. Good luck

  4. #4
    Apollo is offline At The Back Of The Pack Arm chair racerFirst time rider
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    My cdi was bad after a lot of testing. The part is discontinued if that is indeed what you need. I got a TRX 250R cdi. I heard it was the same thing as ATC. Well, it runs like my old one with no problems. I forgot that I even put it in until now. Good luck.

  5. #5
    3 or die's Avatar
    3 or die is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Yes those are the same. Remember that a 85 250r cdi wont work unless you change the harness as well. Good luck

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