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Posted on Jun 14, 2012
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No spark but sending out a signal and changed and checked wiring and CDI but no further luck

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Micky

Micky

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  • Contributor 4 Answers
  • Posted on Jun 14, 2012
Micky
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Joined: Jun 14, 2012
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If it is a CDI unit it could be that even tho it my test ok.
If you have not all ready done so, take it to a bike shop and get them to test it under load. It should only cost a few dollars to have this done.
And change Spark plug even though it my look ok it could be shot.
And make sure that the CDI has a very good earth.
I have found this problem with one of my bikes in the past and this fixed mine.
Hope this helps
Regards
Micky

5 Related Answers

Anonymous

  • 2336 Answers
  • Posted on Nov 20, 2008

SOURCE: CDI help

You can't, just went through this. You'll need to find the correct CDI for your bike, some years will switch back an forth but rarely and Suzuki has never printed, that I've seen, a wiring diagram for the CDI. The 94 might work if you can find it and it should plug right in, the 98 will have a different curve that most likely wont.

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Anonymous

  • 12 Answers
  • Posted on Feb 14, 2009

SOURCE: I have acquired a CDI 1998 to my Yamaha XJ600 Diversion 1993

hi mate. the cdi was changed in 1995 to accomadate a thottle sensor.pre 1995 the cdi was a square item. post 95 there tapered..

Anonymous

  • 65 Answers
  • Posted on May 02, 2009

SOURCE: changed ignition (key switch ) now have no spark

pulser coil? did you use oem ign. sw.? oem switches have a diode in them as thieft deterint. you have to use oem ign.sw?

tombones

  • 3567 Answers
  • Posted on Aug 06, 2009

SOURCE: 1983 yamaha xj 650 no spark already changed the

  • 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.

Anonymous

  • 5 Answers
  • Posted on Sep 25, 2009

SOURCE: ktm 450sxf 07 wont start

buy a yamaha

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I have a 05' brute force. It starts and idles great but when i drive it misses out and when i let off the gas it backfires. Any ideas why? I have cleaned the carbs and changed spark plugs
Do you have a multi-meter and can check your cdi? The cdi is known as an igniter. It's what actually sends the signal to the ignition coil to fire down to the plug. If you can test your cdi and let me know, I'll see if I can find the specs - also, are you able to check your timing?
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Dec 25, 2015 • kawasaki 2005 Brute Force 750 4x4i
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If your 125 pit bike skyteam is not sparking, even though you've tried everything, there could be a few different issues causing the problem. Some possible causes include:
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  2. Stator issues: The stator is responsible for generating power to the ignition coil. If the stator is not working properly, it will not produce the power needed to create a spark.
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May 29, 2017 • RTO Pit Bikes
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I have a 82 yamaha maxim 750 thats not getting fire to the plugs an woundering if u can tell me a little to get me startyed...
Heres how it works.

There is a 1.stator and 2.rotor and 3.signal generator, located on the cranckshaft.
1.Stator produces A/C current
2. Rotor has magnets in it and goes around the stator and is part of the A/C current process.
Rotor also has a raised spot on the out side of it which the signal generator identifies.
3.Signal generator is a wire positioned just above the rotor to read the raised spot on
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The CDI which receives the signal from the signal generator wire. Sends the signal to a coil.

The coil is energized and fires.

Always check the components in reverse order, because the stator, rotor and signal generator rarely fail.

1st, if your getting power to the coil and the coil doesn't fire , then its the coil .
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3rd. Check that all the wires are making a good contact before you change your cdi, because
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best regards
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Jul 25, 2011 • Yamaha TX 750 Motorcycles
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I have a 2010 Oliver City CPI, motor scooter. The engine wont start. The starter seems to work and theres gas in it. Tried the kickstarter and wont start. bad spark plug maybe?
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Jul 14, 2011 • 2011 Cpi Oliver City
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Hi there I'm stuck I don't know how to check the
Sorry but they either work or they dont.
If yours isn't working, replace it.
But before you replce it consider checking the other components, because ign mods are exspensive.
it sounds like you've been already checking the other stuff. heres what i'd check if your bike came to my shop.
1. battery fully charged, and can take a load. (weak batteries = weak ign power)
i have a bike that won't fire at all with weak battery. Make sure battery is good.
2. check for spark at plugs, make sure plugs are good. Pull plugs and turn motor over.
rest plug next to head and turn over, do not touch the plug while turning over
or you can be shocked.look for spark.
if you have spark , then you ign mod is working.
if no spark, then check #3
3. power to coils. check the power going into coils,
if power but no spark, then coil is bad.
if no power. check #4
4. power to coils comes from a ignition system ( points/ cdi /ign. module)
there is a stator and a rotor. and a signal generator. on your motor
the signal generator wire sends a signal to the cdi, every time the rotor rotates.
the ignition system (ign.mod) sends power to coil.
so if no signal to the cdi, then signal generator is bad
if signal going into cdi but not sending the power to the coils then the cdi/ ign. mod is bad.

Hope that helps
Best Regards
Big Al
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Jun 28, 2011 • 1995 Honda VT 600 C Shadow
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I have no spark at spark plug I have checked all wiring and seems ok what are the other things to check and how???
1. The on/off button on the right switch housing could be off. Turn it on
2. The on/off button could be faulty.Take apart and use test light to see if the switch is working by turning it on and off and see if power crosses the connection with the switch on
3. The ignition switch could be faulty. Test with test light to see if your getting power to you coil
4. The stator provides the power. Use Ohm meter, black to ground(green), and red to white wire, then red to yellow wire. the reading should be the same for the white and yellow wire. example: 288 and 288
5. The signal generator/pulse pick-up, send the signal to the cdi. Use ohm meter , black to one end of the wire and red to the other end of the wire, should read 000. if anything else the wire is broke.
This wire is usually black with a red stripe or red with a black stripe.
6. The cdi sends signal to the coil, to fire on time and advance and retards the fire as the motor revs and decelerates. Can be tested but not fixed, must buy a used or new one.
7. The coil provides the spark. Easiest to put a working coil on and see if it fires, if it does, then your coil is bad and just needs replaced.
8. Make sure if its on the kickstand that it is in neutral. Its a safety switch.
9.Make sure you have a good battery.Most local auto parts stores load test them for free
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Nov 29, 2010 • 2000 Yamaha DT 125 R
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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.
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May 27, 2009 • 2001 Hyosung RX 125
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I have acquired a CDI 1998 to my Yamaha XJ600 Diversion 1993
hi mate. the cdi was changed in 1995 to accomadate a thottle sensor.pre 1995 the cdi was a square item. post 95 there tapered..
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Nov 11, 2008 • 1993 Yamaha XJ 600 Diversion S
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