no spark on one from right coil on a 1980 kz 80ltd

I been trying to figure this out, first i thought the coil was bad on the right of the bike, but when i hook the coil to the other side it works fine. I was wondering if any one had this problem before? i get 12v to both coils so i am thinking either it's the Igniter or points.. anyone have ideas?

Checked the sparkplug caps? With a meter, they should test at 5000 ohms, if no resistance, that could be your problem. www.z1enterprises.com and most motorcycle shops sell new caps.

They unscrew from the sparkplug wire, when testing is complete, cut about 1/4" off the end, and rescrew them.

Welcome aboard! In 1980 Kawasaki offered the KZ1000-B4 LTD; the KZ440-A1 LTD; the KZ440-D1 LTD Belt; the KZ550-C1 LTD; the KZ650-E1 LTD; the KZ750-H1 LTD; and the KZ750-G1 LTD II. Just saying you have a 1980 LTD doesn’t provide enough info for any specific advice. It would help a bunch if you were to add you bike’s model identification to your signature line. Ed

It's a 1980 Kawasaki 750 H1 ltd.
It's not the cap on the spark plug (that needs new one's anyways) but it works fine.
If I change the wire's that power the coil from the other side of the motorcycle to this coil then it sparks just fine.
I was test the left side coil wires that work.
The Green wire that's the ground and it went i hooked up to the tester was jumping up and down like it should but when I take the black wire from the right side and test it does not telling the coil to fire..

Including information about bike year and model is helpful to viewers and usually elicits better responses.
It's easy to put the information in your signature where it shows in all posted messages, past and future. And may be changed whenever and as often as desired.





Good Fortune!

There I just update my profile I just made it last night i didn't need help for the last two years of riding from the bike.. Back to the problem at hand

Pull the cover off of the right side of the engine, about 5" diameter with two bolts. Then check the Ohm measurement of the pick-up coils. You could swap the two wires from the pick-up coils going to the ignitor, with the plugs out and laid against the head. This would show whether the pick-up or ignitor is bad. Just like you swapped the coils to rule that out.

Thanks I well test that went I get home today... I see anther post that sounds like the problem of one the wires broke off inside of the Box Igniter. Which I'm going to check too. off his posting kzrider.com/forum/11-projects/358623-80-...t=20&start=20#510550

I had the same bike and had coil issues. My experience with my bad coil is it ran fine cold, once it warmed a bit, I could rev it fine, but load it a bit and lost two cylinders. I replaced the bad one with a stock one (used...) and wouldn't you know the other original one died a month later. I bought a pair of new dyna coils and they worked well. Frustrating part was both coils measured the same and passed every damn test you could try on it.

Now, not to insult you or sound like a smartass, because I've done it several times, make sure you have the correct wiring config. One coil fires 1 and 4, the other 2 and 3. Many times I couldn't figure out why it wouldn't run right, then realized that I had the green and black (the grounds) swapped, so it was out of phase, for lack of a better term. If my memory serves me right, they share the same hot lead, but the negative lead is seperate, right?

So, when you swap coils, it's always the right hand one that doesn't fire? I would think that it's a coil or wiring problem, because if it was something in the ignition, I suspect both coils would be acting up.

Also, on my '80 it had electronic ignition, not points.

Well figure it out. The wire inside the Box Igniter was bad. It was black wire that went to the coil. so i s replaced the wire inside the Box Igniter. No more problem with that..

great news! Always love a cheap, easy fix. Doesn't happen often enough in my opinion.

I had the same problem as you but it ended up being the point gap black wire side.