Question about 1999 Suzuki GSX-R 750 X

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99 gsxr750 power going to top coils but no spark coming out replaced cdi still no joy would both coils go at once?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 5 Answers

SOURCE: My 99 cbr 900 has no spark from plugs. Replaced

i had the same problem on my 97 fireblade it was the rectifier (voltage regulater), try unpluging it and see what happens it is located under the rear plastics it has fins on it too help keep it cool and should have 3 yellow wires, 1 green and 1 red on the plug

Posted on May 17, 2009

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Benimur
  • 6966 Answers

SOURCE: 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.

Posted on May 27, 2009

  • 3567 Answers

SOURCE: no spark 110cc engine wont start

Check the fuses. Next, check for spark but with a new spark plug. How good is the battery? If needed, add water to the battery cells enough to cover the top of the cell plates.Try a jump start from your car battery. Is the kill switch on? Check the operation of the ignition switch with a volt ohmmeter. You should be getting power into and out of the ignition switch.

If the bike doesn't start and run properly check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. Broken or out of adjustment, it would kill the spark. Check for a broken wire at the switch or coupler. Get a service manual and check out the electrical section. Some bikes have a diode integrated into the turn signal relay. Try moving the kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it. If that doesn’t work, check out the relay.

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.

Please rate this answer. Thanks

Posted on May 28, 2009

  • 3567 Answers

SOURCE: 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.

Posted on Jun 18, 2009

Benimur
  • 6966 Answers

SOURCE: Have no spark. Changed coil & CDI box so far.

Hi and welcome to FixYa,
Initially, suggested checks on the wires:

  • black of igniter unit tied to ground;
  • orange wire from igniter to ignition coil with pulsating voltage when starting;
  • gray wire from igniter to ignition coil with pulsating voltage when starting;
  • IGN + 12 on red/white wire to igniter and ignition coils from engine stop switch;
  • IGN + 12 on red/white wire to engine stop switch coming from 10Amp ignition fuse;
  • pulsating low voltage from pickup coil between the wires black/white, white/green & yellow/red.
Postback results of above voltage tests.
Good luck and thank you for asking FixYa. Happy Holidays.

Posted on Dec 15, 2009

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1 Answer

Yamaha G1 Golf cart...Engine does not crank when key is on and gas pedal is depressed... suggestion??.. I've heard that the CDI might be the issue...Discontinued part?


cranking is turning over which indicates that the battery and starter is doing the job
cranking but not firing indicates ignition or fuel problems
now that you have the correct terminology perhaps you can get an answer
first test is to pull a plug ground it out or use a spark plug tester crank it over to see if there is spark
Good spark forget CDI and coil so look at fuel
NO spark indicated , check for 12 volts from the ignition switch on the start circuit
Ignition switches have to power wires to the coil
on gives power when cranking and the other continues power when the starter is nor engaged
power in both positions move on to next check
no power from the switch to the coil when cranking --get new switch next check if both wires have 12 volts is the ignition circuit
check for safety micro switches not working right up to the CDI
power to the CDI but no spark --replace cdi
power from the cdi nut still no spark --replace the coil
AS to not available
check after marker as the units are generic and made by electronic companies not golf cart manufacturers so it is a distinct possibility that a cdi from some where else will fit

Feb 08, 2018 | Yamaha Motorcycles

1 Answer

Yamaha 25 nmo


The power supply is common for all the coils.
Have you switched the coils (wires marked 1 and 2)? If still the same coil non sparking, replace that coil.
If the same output non sparking, check the pulser coil for that cylinder. Invert both pulser coil connections (white red and white black). If the miss is on the same cilinder, replace the cdi. If the miss is on the other cylinder: replace that pulser coil.

Jun 10, 2013 | Clymer Boating

1 Answer

No spark from plug


Could be a wiring problem, Bad CDI unit, Bad Coil, Bad HT lead or a bad spark plug.. first thing to do is to take the spark plug cap off and hold the wire near the engine and see if a spark arcs onto the engine. if it does then its your spark plug or spark plug cap. If that doesnt work get a test lamp and check the voltage to the wire going into the coil, if it flashs the light then the coil is bad. If that doesnt work then it could be a wiring issue, so i would try unplugging the kill switch first. if that gives no joy then its a wire harness or CDI/ Magneto issue. So my next step would be to go to a salvage yard or mechanics with the bike and ask them to test the CDI (by using one they know is good or checking the wires).. they will tell you what the problem is from there. Tell them what you have done so far so they don't waste time.

Sep 09, 2012 | Motorcycles

1 Answer

No Spark, No Power coming from CDI to coil


Check the wiring on the connector plugs make sure all the wires are the same color on both sides, red to red blue to blue and so on. I had the same problem After replacing a stator and just plugging it in,after two weeks a new cdi and coil i noticed there were two wires transposed.

Aug 22, 2012 | Pit Bike 125cc 4 Stroke Dirt Bike

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

1 Answer

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

Jun 28, 2011 | 1995 Honda VT 600 C Shadow

2 Answers

My kawasaki aura 110 has no electricity, battery is ok, cdi is ok


This questions is very vague. So I'll try my best to answer it for you. Test your battery with a volt meter, should read whatever the battery says, either 12 volts or 6 volts, I'm not 100% on this specific bike, but it should say what the power should put out on top the battery. If it's bad, replace it at auto zone, if it's fine, go to the spark plugs and test and/or just replace those. Should be only 2 plugs so it's an inexpensive fix. Check the plug wires, ignition coil. Let me know what you find.

Oct 20, 2009 | 2005 kawasaki KSR 110

3 Answers

1986 gsxr 400.not sparking r starting


Hi and welcome to FixYa,

If somehow, the CDI could be opened up, then component level repair maybe tried. There would be 2 final transistors that actually do the switching; 1 for each coil. Offhand, it would appear that 1 of those 2 is faulty. Otherwise, replacement is the only option.

Incidentally, in some versions, a fault in the tachometer could also cause one of the CDI's output to fail.

Postback results of tests.

Good luck and thank you for using FixYa.

May 27, 2009 | 1996 Honda CBR 400 RR

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

1 Answer

No spark


There are a # of things that can take your spark out, first I would see if you have power to your ignition coil (100V+). If none there you need to isolate your ignition switch (unplug it or take it out of the equation) and jump your starter solenoid manually or try pushstarting the bike. If still nothing check for voltage going into your CDI box, if none check for voltage out of your stator (over 100V) and your trigger or pulse coil (over 3V). If you find voltage at the stator and not the trigger replace the trigger and vice versa. If there is voltage for both replace CDI box (but be cautious to verify good ground for CDI box and ignition coil). If you find voltage out of your CDI box (over 100V) replace your ignition coil. Good luck!

Apr 11, 2009 | 1992 Suzuki GSX-R 600

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