Question about 1977 Suzuki GT 500

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No spark i have changed the cdi unit and kill switch for known good one's still on spark

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Posted on Jan 02, 2017

Benimur
  • 6966 Answers

SOURCE: NO SPARK ON A 98 RM 125

Hi and welcome to FixYa,

Initially, test for the presence / absence of below described voltages using an analog / needle type voltmeter when starting the bike:

  • pulsating low AC voltage coming from the pickup coil;
  • pulsating voltage feeding the ignition coil.

Good luck and thank you for asking FixYa.

Posted on Dec 19, 2009

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1 Answer

I have a 1996 Yamaha Kodiak 400 with no spark


If you have another one try the ignition switch and the kill switch.

Jan 27, 2014 | Yamaha Motorcycles

2 Answers

There is no spark coming from the spark plug(new), there is power coming to the cdi, but none coming from the coil from the cdi unit


It sounds like either the cdi has become faulty, or it is imobilised due to either the safety switch on clutch lever, side. Stand, ignition switch, or engine kill switch, the only way to test the cdi is to replace it, some circuit tests on the unit may be possible, but only a new unit will eliminate the fault

Aug 14, 2011 | 2011 Yamaha TZR50

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Changed the CDI, Magneto, and pick up coil, on Kazuma Falcon 90 ATV. Still no spark.please help.


I'm having the same problem with my Kazuma falcon 250. No spark, the stator shows good ohms and I just replaced the CDI box and still nothing. I'll check the kill switch and reverse override.

Apr 29, 2011 | Sport & Outdoor - Others

1 Answer

2008 gilera vx 125, changed the spark plug and


first thing to check is all the wiring for any damage or incase something has just come unplugged before getting the cdi unit checked and is the ignition switch in good condition??

Dec 12, 2009 | 2005 Gilera Runner VX 125

1 Answer

I have a fym 250 which has no spark at plugs no power getting to kill switch & a box which is black in colour under l/ hand panel which has been on chain. could this be the course


it would seem the black box is a cdi unit which is full of electronics & is now needing renewal, hence why no power at kill switch etc

Sep 19, 2009 | 2005 Hyosung GT 250

1 Answer

1983 yamaha xj 650 no spark already changed the cdi coil plugs wires and mag pick up what next?


  • 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.

Aug 06, 2009 | 1983 Yamaha XJ 650

1 Answer

No spark


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.

Jun 18, 2009 | Honda XR 200 Motorcycles

1 Answer

No spark on Hyusu


Hi and welcome to FixYa,

For a "no spark" problem with a Hyosung RX125, check:
  • temporarily disconnect the battery. With the engine on at both the ignition switch and engine kill switch, verify that the green wire to the CDI does not measure 0 ohms to ground;
  • if it does, check the ignition switch and the engine kill switch;
  • it it measures anywhere between 50 ~ 500 ohms, then reconnect the battery and check that there is +12 on the orange wire going to the CDI with ignition switch on;
  • for a pulsating voltage (high ACV) at the white / blue wire coming from the CDI going to the ignition coil;
  • for a pulsating voltage (low ACV, 0.5VAC) at the green wire coming from the pulser coil going to the CDI; and
  • of course, check if the CDI (black / white) is connected to the ground.
Postback results of tests.

Good luck and thank you for using FixYa.

May 27, 2009 | 2001 Hyosung RX 125

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