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Thread: 1985 250es NO SPARK?!?!?!

  1. #1
    Join Date
    Jun 2018
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    Long island Nova Scotia, Canada
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    1985 250es NO SPARK?!?!?!

    Hey guys. I juat recently got an 85 250es running. It had been sitting outside for a little over a year. It was running great untill a couple weeks ago it randomly died. I checked everything and it had no spark. I got a new ignition coil and a new plug but still no spark. Any help on how to fix this problem? Thanks

  2. #2
    Join Date
    Jul 2009
    Location
    South Florida
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    6,722
    The most common electrical parts to go bad on that machine are the ignition switch and the CDI box .
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  3. #3
    Join Date
    Jun 2018
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    Long island Nova Scotia, Canada
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    Ok how do i tell if theyre no good? Use testers? Thanks alot buddy

  4. #4
    gimmeamidget is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Jun 2014
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    utah
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    I have had the solder joints on the ignition switch break on a few of these so I would check the joints when your checking the ignition switch.

  5. #5
    Join Date
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    South Florida
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    Ignition switch you test with an ohm meter , the CDI can only be texted by using a known good one , no real good test for your old one .


    Quote Originally Posted by Haulibut555 View Post
    Ok how do i tell if theyre no good? Use testers? Thanks alot buddy
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  6. #6
    Join Date
    Jul 2018
    Location
    Indiana
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    30
    Any one have a source for an aftermarket CDI box for an '85 big red? or any success adapting the two plug style off of an '86 to fit the one plug style of an '85?

  7. #7
    Join Date
    Apr 2014
    Location
    Edmond, KS
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    My 1985 250ES Honda manual gives specs to test the CDI with a voltmeter.

  8. #8
    Outlaw #24's Avatar
    Outlaw #24 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Iowa
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    There is a fusible link under the seat left side by Battery. Most common cause for no spark! Minimal cost

  9. #9
    Outlaw #24's Avatar
    Outlaw #24 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Haulibut555 what did you figure out on this. Do not leave people hanging that gave you ideas!

  10. #10
    Join Date
    Jul 2018
    Location
    Indiana
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    I'd be interested to hear what you found out, I bought two non running '85 big reds the other day and cant get spark from either. I took cdi and coil off a running trike and checked the fuse next to the battery. Look forward to gearing anything else. If I figure mine out ill update the thread

  11. #11
    Chopsaw is offline Just Too Addicted Arm chair racerJust too addicted
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    Quote Originally Posted by Jasonh View Post
    I'd be interested to hear what you found out, I bought two non running '85 big reds the other day and cant get spark from either. I took cdi and coil off a running trike and checked the fuse next to the battery. Look forward to gearing anything else. If I figure mine out ill update the thread
    There is a fuse on the left side , looks like a wrench . Did you check that one ? By the left rear .

  12. #12
    Chopsaw is offline Just Too Addicted Arm chair racerJust too addicted
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    Heres a link to an old post . The link fuse is in a black box . I cut it out and wired in a new type fuse holder .
    http://www.3wheelerworld.com/showthr...s-wire-harness

  13. #13
    Join Date
    Jul 2018
    Location
    Indiana
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    Yeah like a soild piece of metal? not like a typical glass fuse?

  14. #14
    Join Date
    Sep 2018
    Location
    Georgia
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    Correct. That should be your main fuse. Most replace it with a new 20 AMP fuse with cover. Pretty easy todo.

  15. #15
    Join Date
    Jul 2018
    Location
    Indiana
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    Still not getting any spark. Shifting my attention to my other big red and a 110 project for now.

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