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Thread: honda 250sx no spark

  1. #1
    Join Date
    May 2005
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    ohio
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    Cool honda 250sx no spark

    i just bought a 250sx its missing the engine start switch , the run stop switch , its got good compresion ...but i cant see any spark , is there anyway of kick starting it with out the run/stop switch , or a battery , the ppl who owned it cut the wires cause they lost the key tried to put a new key on ...but gave up

  2. #2
    Join Date
    Nov 2004
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    With all thta has happened to your wireing, I would say that is the problem. Check all your connections.

    Phil

    '85 350X-The Flagship
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  3. #3
    Join Date
    May 2005
    Location
    ohio
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    8
    is there any way i can bypass all the wiring and have it kickstart and a kill engine switch and if so ..how

  4. #4
    ATCnut is offline Got The Holeshot Arm chair racerJust too addicted
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    The kill switch shorts out the ignition. There was a green wire (ground) and a black with white stripe wire that went to both the key switch, and the handlebar switch. make sure that the are not connected together. Then you should have spark. Connecting the black with white stripe wire to the green wire (ground) will kill the motor. The black with white stripe wire goes to the CDI.
    ATCnut

    82 185s - sold
    83 200x (hopped up)
    84 200x (stock)
    84 70 (lost this one to the DMV)
    85 70 (soon to have lights, a foot brake, and CDI ignition)
    84 200es (parts trike) - sold
    85 350X (the best)
    85 350X (siezed motor, dream of a poweroll kit someday)
    85 250sx (frame was trash, got parted out)
    86 250sx (the tractor)
    86 250sx (a nicer tractor)
    86 250sx (an even nicer tractor)
    87 200x (parts trike, its really rough, a dog was chewing on it for a while)
    87 250es Big Red (the tank!!)

  5. #5
    Join Date
    May 2005
    Location
    ohio
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    8
    none of the wires are coneccted , i just hooked the battery up and tried to connect wire to start , tapped the starter and it clicked on and stays on but just turnning but still have no spark from the plug , is there anyway to tell if the CDI is bad , or a way to bypass cause i think it might have something wrong with it

  6. #6
    ATCnut is offline Got The Holeshot Arm chair racerJust too addicted
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    799
    I just remembered, the other thing about the sx and the es (big red) is that they need the ground from the neutral switch to start. You need to make sure that the wire is connected to the switch, and the switch is working. The switch is under a little cover low down on the right hand side (facing forward) of the motor. Kinda behiend the brake pedal. To work around this, you need to ground the light green with red stripe wire that is going to the CDI.

    I wish Honda had not put this safety interlock on the trikes, it makes it a PITA.
    ATCnut

    82 185s - sold
    83 200x (hopped up)
    84 200x (stock)
    84 70 (lost this one to the DMV)
    85 70 (soon to have lights, a foot brake, and CDI ignition)
    84 200es (parts trike) - sold
    85 350X (the best)
    85 350X (siezed motor, dream of a poweroll kit someday)
    85 250sx (frame was trash, got parted out)
    86 250sx (the tractor)
    86 250sx (a nicer tractor)
    86 250sx (an even nicer tractor)
    87 200x (parts trike, its really rough, a dog was chewing on it for a while)
    87 250es Big Red (the tank!!)

  7. #7
    Join Date
    May 2005
    Location
    ohio
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    8
    thanks so much ...another quick question. on your 250sx the kickstart does it slip alot
    it will kick the motor over a few turns and then just sound like a ratchet a few turns ...i just found that odd

  8. #8
    Join Date
    Jan 2003
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    If you need it I have a complete harness for sale. $55 shipped.

    Lots O Trikes!!!!!
    TRIKEFEST 03, 04, 05, 07, 09 Going the distance

  9. #9
    ATCnut is offline Got The Holeshot Arm chair racerJust too addicted
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    The kicker slipping is a common thing. It has to do with the one way clutch. There was a good write up about it here or at .org (I don't remember where). My first sx does that so bad you cannot use the kicker anymore, just the electric start. That motor is really sad, I have a replacement under the bench, just have to put it in.

    Did you get it started yet?
    ATCnut

    82 185s - sold
    83 200x (hopped up)
    84 200x (stock)
    84 70 (lost this one to the DMV)
    85 70 (soon to have lights, a foot brake, and CDI ignition)
    84 200es (parts trike) - sold
    85 350X (the best)
    85 350X (siezed motor, dream of a poweroll kit someday)
    85 250sx (frame was trash, got parted out)
    86 250sx (the tractor)
    86 250sx (a nicer tractor)
    86 250sx (an even nicer tractor)
    87 200x (parts trike, its really rough, a dog was chewing on it for a while)
    87 250es Big Red (the tank!!)

  10. #10
    Join Date
    May 2005
    Location
    ohio
    --
    8
    nope still cant get any spark and the starter engages on it on and stays on constantly but it don't sound like its turnin the motor

  11. #11
    Join Date
    Jul 2006
    Location
    Moncton
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    Thanks a million to ATCnut, your responses brought a end to 4 hour session of me and my buddy trying to get me 250 to start when it had no spark, the green and white and black were wore and touching. Next time "I'll just check here first

  12. #12
    ATCnut is offline Got The Holeshot Arm chair racerJust too addicted
    Join Date
    Nov 2002
    Location
    Auburn Washington
    --
    799
    Glad I could help
    ATCnut

    82 185s - sold
    83 200x (hopped up)
    84 200x (stock)
    84 70 (lost this one to the DMV)
    85 70 (soon to have lights, a foot brake, and CDI ignition)
    84 200es (parts trike) - sold
    85 350X (the best)
    85 350X (siezed motor, dream of a poweroll kit someday)
    85 250sx (frame was trash, got parted out)
    86 250sx (the tractor)
    86 250sx (a nicer tractor)
    86 250sx (an even nicer tractor)
    87 200x (parts trike, its really rough, a dog was chewing on it for a while)
    87 250es Big Red (the tank!!)

  13. #13
    zoomerman's Avatar
    zoomerman is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Jun 2005
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    this might help you out a bit

    http://www.files.3wheelerworld.com/W...TC250SXx85.jpg

    double check all of the wires and connections
    1985 suzuki alt 185
    1985 honda atc 250sx
    1985 honda atc 200m (all apart)
    1984 honda atc 200es
    1984 honda atc 200x- need motor, plastics, axle, exhaust.
    1984 honda atc 125m- times 2
    1985 honda atc 200m all apart
    1983 honda atc 200e times 2
    1983 honda atc 250r-times 2
    1983 honda atc 200 4 parts

    1983 honda atc 110 times 3
    1979 honda atc 110 smokey
    1978 honda atc 90- restored

    Have lots of extra parts, if interested email at e_mcy@hotmail.com

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