2/3 Coil only fires half the time!!! RESOLVED :)

Lol, sorry.

I think it's really up to how much you like tinkering. If you hate soldering, wiring up circuits (it sounds like you are pretty proficient at it, though), and fabricating metal, then the HEI may not be your thing. If you like learning about ignitions, and builing custom parts etc, then I see you wiring up the HEI.

Sooooo.....new coils....new Dyna-S...still the 2/3 coil side fires half the time. Any new ides of what to check?

Are you saying that there is nothing wrong with the old, Ignitor, or the two pick-up coils?
I'll tell you I also had a intermittent spark issue on my trip. I found the #3 Accel 8.8mm graphite suppression wire at fault. Not at either end, somewhere in the middle, it finally died. Have you used an OHM meter on your wires, recently, like today?

Motor Head wrote: Are you saying that there is nothing wrong with the old, Ignitor, or the two pick-up coils?
I'll tell you I also had a intermittent spark issue on my trip. I found the #3 Accel 8.8mm graphite suppression wire at fault. Not at either end, somewhere in the middle, it finally died. Have you used an OHM meter on your wires, recently, like today?

If you explain that test to me, I will go check them...but I forgot to mention in my post above that the plug wires are new too!

EDIT: And doing the swap test that Loudhvx explained to me determined that the igniter was bad. The only thing that is still in that circuit is the power wire to the coil. Everything else has been replaced. Could it be THAT one measly little wire has been causing my woes?

Don't know what you bought, but I would check them. OHM meter set on like 10K Ohm's. They should measure around say 4-5K, depending on which wires and how long. None should be 0 Ohms, which is open, and none should be above 10K. Measure them using the Ohm scale and both red and black leads to each end of the plug wire removed from the coil and plug. 10 minutes tops.

clutch wrote: EDIT: And doing the swap test that Loudhvx explained to me determined that the igniter was bad. The only thing that is still in that circuit is the power wire to the coil. Everything else has been replaced. Could it be THAT one measly little wire has been causing my woes?

Well...that SHOULDN't be the issue because the problem jumped to the 1/4 coil after swapping....

OH Ok so it doesn't move if you swap Wires? Or did you just swap coils, and leave the plug wires as they were?
If it stays with just the same side through it all, then I would run some test wire for the Primary side. That is Hot wire the 12v feed to the suspect coil. See what that does. then Hot wire from your new Dyna, that side again straight to the coil. By pass the SOB OEM wiring and see if it makes a difference.

The test was to flip the ignition rotor and wiring so the black lead went to the 2/3 coil and green to the 1/4. I swapped the plug wires so that they stayed on the same coil, but went to different plugs. The condition moved to the opposite coil, with different plug wires on it, but stayed with the green coil wire. The test was to determine if the issue was the ic igniter or the pick up coils. Since the issue stayed with the green wire, it led us to believe the issue was the ic igniter. But now...the issue is still with the green wire (new wiring, but maybe a bad connection???) with all new ignition parts. It's baffling!!!!

You already ran new wires to both sides of each coil, Primary wire? So new 12v Feed and Ground signal from , Now Dyna, ignitor? Soldered and heat shrinked at ends or just striped and crimped?

Also what sort of Test light do you have for testing?

Motor Head wrote: You already ran new wires to both sides of each coil, Primary wire? So new 12v Feed and Ground signal from , Now Dyna, ignitor? Soldered and heat shrinked at ends or just striped and crimped?

Stripped and crimped for now, until I rewire the whole bike. I did not run the new 12v to the coils yet, but that shouldn't be the issue because when I swapped the coils, I left the same 12v wire....I think....hmmm...maybe I should go check that sucker real quick....

If you have a decent test light, hook that to the 12v feed wire then to ground, then run the bike. It should stay lit up. It should be bright and steady. that will tell you if the 12v is going away.

Motor Head wrote: If you have a decent test light, hook that to the 12v feed wire then to ground, then run the bike. It should stay lit up. It should be bright and steady. that will tell you if the 12v is going away.

I may have to run to the store for a test light...unless a neon tube would work. That's the only thing in the garage I think I have that is a 12v dc light of any kind.