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No spark on 2,3 cylinder (wiring issue?)

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21 Sep 2020 03:25 #835460 by Lefpap
Hello again to the community,
As the title says no spark plugs to 2,3 cylinder
The bike is a kz400 ltd (kz400j motor)
I narrowed down the source of the problem to the 4-pin connector of the pickup coils, according to the manual the voltage should be around 0.70 volts when power is on, however the yellow wire has none voltage, the rest are up to spec.. any help will be appreciated

KZ 400K ltd-II
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  • hardrockminer
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21 Sep 2020 05:12 #835463 by hardrockminer
Replied by hardrockminer on topic No spark on 2,3 cylinder (wiring issue?)
I'm not sure if your bike is wired like the larger 4 cyl motors but my KZ1000 has two coils...one for 1 & 4 and one for 2 & 3. If you've verified that your coil for 2 & 3 is OK then your problem is either in the exciter (if you have one on your bike) or in the pickup.

I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.
The following user(s) said Thank You: Lefpap

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24 Sep 2020 01:25 #835596 by Lefpap
Replied by Lefpap on topic No spark on 2,3 cylinder (wiring issue?)
Thanks for the reply, sorry I took some time to reply I checked and both ignition coils work fine,
I opened the pickup coils cover and found this..
Look for the yellow wire seems out of place
(Resistance and voltage of the black/blue is up to spec, the other one has no power on the yellow wire so no resistance) I don't know how to check the ic igniter

KZ 400K ltd-II
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  • hardrockminer
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24 Sep 2020 05:04 #835597 by hardrockminer
Replied by hardrockminer on topic No spark on 2,3 cylinder (wiring issue?)
Wow! That's pretty bad. Fix it up and check again. It should look like this.


I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.
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