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no spark

This is a discussion on no spark within the Other Models/Brands forums, part of the Performance /Technical category; i have a kodaik 400 4x4 was out riding for about 3 hrs and just died would not start towed it back home checked all ...


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Old 03-29-2012, 05:44 PM   #1
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i have a kodaik 400 4x4 was out riding for about 3 hrs and just died would not start towed it back home checked all fuses and all wires all looked good checked spark plug had no spark checked coil positive lead no power was gonna order new cdi box n coil but cdi box was replaced by dealer 2 yrs ago and only has but 65hrs on it since box was replaced dont know what else to look for n dont want to spend that kind of $ for something i dont need can anyone give some advise? wanna get back to riding any advise would be helpful thanx

Last edited by kodaik; 03-29-2012 at 07:32 PM. Reason: checked other possible issues
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Old 03-29-2012, 09:43 PM   #2
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It's not supposed to have power at the coil. It uses A/C voltage produced by the stator to run the ingnition system. CDI's usually don't die while in use. They ususally just won't start one day when you try to start it. I'd think more simple like key, run switch, or a wire connection somewhere. Have you replaced the spark plug or tried a spark tester to verify that there is no spark?
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Old 03-29-2012, 10:30 PM   #3
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no just used a screw driver to the manifold key switch works on/off switch works so i guess im gonna go over all wires again and buy a new spark plug but the one i took out looked fine but i hear they can just go bad any suggestions on where to start looking at wires?
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Old 03-31-2012, 10:56 PM   #4
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All the ignition related parts in the engine are on the left side. Your pulser could be suspect. I would want to be certain you have a ignition problem before you go too far. Check you wires coming from the left engine cover and make sure they're plugged in good for starters. Spark plug would be a quick easy fix so cross your fingers on that.
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Old 04-01-2012, 07:48 AM   #5
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tried new spark plug that wasn't the problem lookked at every wire and connection they all look good so i'm thinking one of the parts that makes spark is bad but really don't know how to test any of them. Was told the rectifer/regulator was bad but dont wanna replace parts that are not bad can get very expensive
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Old 04-01-2012, 01:15 PM   #6
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I believe your unit has an exciter coil in the stator. If this is the case the regulator rectifier is not necessary for the ignition system to produce a spark. I'll pull up a manual in the morning and get you some wire colors and basic tests to do.
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Old 04-01-2012, 03:15 PM   #7
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that would be great thanx
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Old 04-02-2012, 09:52 PM   #8
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Kodiak, I had a customer waiting on me when I got to my shop today and we slipped out for a few hours of riding after lunch so I didn't get a chance to look up your wiring diagram. I just tried Yamaha's dealer site and I think it's down. As soon as I can get to a manual I'll help you out. May be in the morning.
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Old 04-03-2012, 09:59 AM   #9
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looked over the diagram. The most simple test I see would be to test for switched power on the red/black wire at the ignition control module. This will test everything from the battery to the control unit. The power passes through the main fuse, the ignition switch, the run switch and the ignition fuse. Test for that and let me know.
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Old 04-03-2012, 06:31 PM   #10
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ok checked that wire has power. Is that the power going into that box or coming out because the orange wire coming out of that box to the coil has no power on a/c or d/c current on my meter. all the other wires to kill switch,key starter relay all have power to them checked every ground wire i can find all good ground. does that mean the C.D.I. box is bad?
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Old 04-03-2012, 08:28 PM   #11
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Check your pulser, white/red wire and white/blue wire, should have 459-561 ohms between them.

then the rotor rotation direction sensing coil, red wire and white/blue wires, should have .085-.105 ohms.

If those check good then maybe I'd start thinking CDI, but it's rare that these later model CDI's go out for no reason.

just for kicks try unplugging the rectifier and see if it makes a difference. An RTA at yamaha showed me that trick on a Raptor once but couldn't explain why it made the unit fire, but it did. Seems like it was the rotor direction coil. The rotor direction coil is supposed to keep the machine from misfiring and shearing off the starter bearing bolts.
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Old 04-03-2012, 08:42 PM   #12
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r these wires coming from the box and also tried unplugging rectifier still wont start
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Old 04-03-2012, 08:47 PM   #13
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can u check this part on e-bay item #360447323368 and tell me if this is correct part?
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Old 04-03-2012, 08:51 PM   #14
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i did hook up lights to the light switch you think that may have made this happen? my father had someone hook up a winch n it kept blowing the cdi box

Last edited by kodaik; 04-03-2012 at 09:09 PM. Reason: more info
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Old 04-03-2012, 09:16 PM   #15
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Those wires should be at the box, coming from the stator assembly.
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Old 04-03-2012, 09:17 PM   #16
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What year is your machine, I'll look up the yamaha part number for your control unit.
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Old 04-03-2012, 09:25 PM   #17
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2004 kodaik 400 4x4 ymf400 the cdi box alone is 265.00 from moto sport so i thought this would be a better deal then buying just cdi box

Last edited by kodaik; 04-03-2012 at 09:27 PM. Reason: other info
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Old 04-04-2012, 05:04 PM   #18
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ok checked out the wires you told me r getting ohms but dont have a digital meter so cant say excatly the ohms u specifed but there r ohms there so do you think CDI is bad or maybe pulser?
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Old 04-05-2012, 07:46 PM   #19
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You really need a digital meter to get an exact reading, that's why yamaha give you a range that the coils should read. If they're out of spec, then the stator should be replaced, it they're in spec and all the related wiring seems good, then I'd think CDI. You can buy a cheap meter at the parts store or at Radio shack I think.
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Old 04-05-2012, 10:04 PM   #20
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yea picked one up 2day so everything didnt check out so im leaning towards stator so im gonna buy it and put it in thanx for all ur help youve been great!!!!!!!

Last edited by kodaik; 04-06-2012 at 08:13 PM. Reason: wrong info
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