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Thread: why no spark?

  1. 05-30-2008, 09:50 AM #1
    200x newby's Avatar
    200x newby
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    why no spark?

    On my 86 atc250r I put a brand new electrical system on it including: stator, wiring harness, regulator, coil, cdi box. everything is new and from the 88-89 trx250r but im not gettin any spark! So before i baught a new honda cdi box for the 88-89 250r I tried a 350x cdi and I get spark just at all the wrong times. But when I trie to put any of the 3 250r cdis on it creates no spark! Any ideas? I do not have an on off switch yet for it but on my blaster I tokk it off an it still worked. Let me know what you guys think! Thanks!!!
    ATC500AF
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  2. 05-30-2008, 12:21 PM #2
    Mosh
    Mosh is offline I'm the one with all the 2 stroke around here! The day begins with 3WW
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    if you can come out my way,I may be able to help this weekend.
    Here is where my long useless list of stuff nobody cares about should go...


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  3. 05-30-2008, 03:56 PM #3
    Yamahondaman's Avatar
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    HUMMMM ... i just sold a wire harness COMPLETE for the "85" ATC for 35 bucs.. the guy had a 1986 TRX that stopped... he installed the Brain Box and it RUNS now
    Check out Moshman ... he has knowledge and spare parts...
    did you check the Pulser Generater , Has the Harness Wireing been messed with,all the ground wires bolted on tight,the Flywheel Key OK ?
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  4. 06-04-2008, 12:59 PM #4
    200x newby's Avatar
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    ground is nice the ENTIRE electrical system is new!
    ATC500AF
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  5. 06-04-2008, 01:06 PM #5
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    PWK39
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    wow that really blows.do you have a service manual?I would start checking stuff according to that .it's probably something stupid.double check your kill switch make sure its not making ground at the wrong time.
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  6. 06-04-2008, 01:39 PM #6
    200x newby's Avatar
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    I dont have a kill switch or the keyed ingnition but I have ran plenty of bike without them before! I just got another brand new cdi box and its not doing squat either. I'm pulling my hair out here!
    ATC500AF
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  7. 06-04-2008, 03:39 PM #7
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    Quote Originally Posted by 200x newby View Post
    I dont have a kill switch or the keyed ingnition but I have ran plenty of bike without them before! I just got another brand new cdi box and its not doing squat either. I'm pulling my hair out here!
    ronnie was refering to the keyway on your crank that holds the flywheel so it doesnt spin freely on the crank.
    "Instruction manuals are nothing more than another man's opinion."
    - Chick McGee



    -1985 250sx
    - 1986 atc310R drag bike
    - 1981 110 chopper.
    - 1985 350X 3+1 durablue axle, uni filter
    - 1985/6 350x
    - 2-84 atc250r's and 1 83
    - 2002 trx400ex
    - 1985 atc 250r
    -1985 atc70 WTB PARTS
    - 1985 tecate

    MADE IT THROUGH TRIKEFEST 04, 05, 06, 07, and 08, cant wait til 09!!
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  8. 06-04-2008, 04:38 PM #8
    200x newby's Avatar
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    Quote Originally Posted by dizasterzrfun69 View Post
    ronnie was refering to the keyway on your crank that holds the flywheel so it doesnt spin freely on the crank.
    I know what he meant and it looks to be fine and not sheared off. it ranquite well before I blew my head gasket and needed my head rechambered. I'm just saying since I have the 88-89 trx250r wiring harness it had a keyed ignition and I dont have it. I really dont know what to do and honestly dont feel like spending $65 an hour plus labor for my dealer to look at it!
    ATC500AF
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  9. 06-04-2008, 06:24 PM #9
    dizasterzrfun69's Avatar
    dizasterzrfun69
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    Quote Originally Posted by 200x newby View Post
    I'm just saying since I have the 88-89 trx250r wiring harness it had a keyed ignition and I dont have it
    oooo i see
    "Instruction manuals are nothing more than another man's opinion."
    - Chick McGee



    -1985 250sx
    - 1986 atc310R drag bike
    - 1981 110 chopper.
    - 1985 350X 3+1 durablue axle, uni filter
    - 1985/6 350x
    - 2-84 atc250r's and 1 83
    - 2002 trx400ex
    - 1985 atc 250r
    -1985 atc70 WTB PARTS
    - 1985 tecate

    MADE IT THROUGH TRIKEFEST 04, 05, 06, 07, and 08, cant wait til 09!!
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