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Brian Bellas
Brian Bellas Posted on Aug 24, 2015
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Already replaced cdi box still no go also bypassed the kill switch

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5 Related Answers

Anonymous

  • 137 Answers
  • Posted on Mar 24, 2009

SOURCE: No spark-2001 YZ250

hi mate ,,i wouldnt advise u disconnect the kill switch,,on one of these bikes,, cuz if and i hope it doesnt happen ,that u fell of in the middle of no where and trapped your foot in the back wheel the wheel will kepp spinning,,and u would have no way of shuting it off, unless u can stall it,,which is hard wen face down, ive nown it to happen,, any way if it has been pinched and didnt work any way then yes it would disable the switch

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Anonymous

  • 957 Answers
  • Posted on Jun 01, 2009

SOURCE: TTR 90 wont start. Not carb. Not CDI. Plug cap?

Every component plays a part in the ignition system. Check the wiring as you go. Start at one end and move forward. You have done a lot of work so far. so you should be close. If the igniter is fine and the other components too. Then it would narrow it down to an electrical problem or no signal/pulse to the coil. See if the coil is receiving that pulse. you can use a test light for this test. Pos. will be power and NEG. will be the pulse. With light on the NEG. crank the engine over and see if it flashes. Let me know how its going.

Anonymous

  • 5 Answers
  • Posted on Aug 20, 2009

SOURCE: i need help i have a 1990 yz 125 i have fire from

you run the positive lead from the cdi to the positive lead on the coil.... then somewhere between the negative lead on the coil and the frame/engine ground you splice in the kill switch.........what that does is breaks the ground when you push the kill switch which then kills the spark to the motor

Anonymous

  • 1167 Answers
  • Posted on Oct 07, 2009

SOURCE: my kx250f has no spark after replacing wire

are you getting power to these items best to check this before you carry anyfurther

Anonymous

  • 4 Answers
  • Posted on Jul 05, 2010

SOURCE: I have a 93 gsx600f katana I replaced my battery,

make sure you check red engine on switch and that cables are connected correctly

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I need help i have a 1990 yz 125 i have fire from the scatter plate to the cdi box i also have fire from cdi box what i need to know is how to hook it up to the kill switch and the coil
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I have a1980 gs 850. i have no spark at the plugs. someone said i should start at the CDI box? How can you test this?
  • Start with new spark plugs. Do you see spark? If not, check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it.
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  • Do you see spark? If not, check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the side stand kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it.
  • Is the handlebar kill switch on? Is it shorted out?
  • Are you getting power to the coils?
  • Check the fuses. How good is the battery? Try a jump start from your car battery.
  • Check the operation of the ignition switch and all kill switches with a volt ohmmeter. Check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires? Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center or side casing. If still no spark, get CDI system and coils checked at the dealers shop.
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Check the side stand kill switch if your bike has one. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it. Check the fuses. How good is the battery? Try a jump start from your car battery. Is the handlebar kill switch on? Check the operation of the ignition switch and all kill switches with a volt ohmmeter. Install new spark plug.

If that doesn't do it, check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires? Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center casing. If still no spark, get CDI system and coils checked at the dealers shop. You can screw up a CDI unit checking it yourself.
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Jun 18, 2009 • Honda XR 200 Motorcycles
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1980 Honda Cm400a No spark
Hi and welcome to FixYa,

Bypassing the kill switch means removing the connection of the black / white wire either at the emergency stop switch (kill/run), ignition switch or preferably at the CDI connector.

Additionally, you can try:
  • start with the side stand up;
  • check/wiggle the 6 wires coming from the stator going to the CDI.

Would appreciate a postback on results / updates.

Good luck and thank you for using FixYa.
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