intermittent no spark (long story)

[opsled]

Dan if ya get to needing parts I've got 8U9, 80N and 83H systems here that are known good.

For the rest,,, (who don't know) here's the deal with changes,,

83-84 (8U9) are the same. Everything.. Harness and all electricals.

85 and up (80N) had TORS and extra lighting coil for bar warmers and TORS so the harness is different to accomidate and stator has an extra wire. CDI is the same as 83-84 and stator will also work in 83-84. You just have the extra power wire in out of the stator (yellow/black stripe).

87 and up (83H) had a different charge coil for ignition, a different CDI and flywheel. Supposedly the timing curve is much better than the 8U9/80N system. The harness and all other components are the same as 80N (85-86). The 83H flywheel will run them all. The CDI and stator are plug and play with all years but also has the extra wire for bar warmers like the 80N setup. 80N setup will run 87's and up but do it at 85-86 specs.

opsled

[northerngn]

Ok pulled the stator today and verified brown wire is reading to ground
I gently heated and chipped away at the orange goop and moved the wire away from the mounting post
Now brown wire no longer reads ground neither does the red wire or the white/red wire
Verified all connections still in spec(so I didn't mess anything up)
Going to reinstall and make sure black wire with white stripe is ground free and give the old girl a pull...
-Dan

[northerngn]

Didn't do anything after the stator repair,so just for shits and giggles I plug in the other used cdi box.
I just happen to hook the ground wire up last and it snapped a little spark!!!! GOOD SIGN!!!
Gave it a pull and it ran, I turned it off with the key.
Turned key back on and then started it and then killed it with the stop start switch.
Life is good, now I'll just rewrap my wire harness and then try my buddies 84 cdi box.

That way if it runs on the 84 I'll know that if this crap happens ever again I will know if I truly can or cannot the the box for testing.

Thanks to all you guys out there helping along the way and I hope this thread can help someone else alone the way.

I'm guessing when the brown wire shorted against the stator mount that it took out the cdi

Oh well at least I know the harness is in better shape now than when I bought it

-Dan

[northerngn]

Yes it starts and idles on an 84 box as well!

-Dan

[opsled]

Good Work Dan!!


opsled

[northerngn]

I have to give credit to my lovley wife.
She was the one who had the idea and completed the task of unplugging the wires from the cdi box 1 at a time to see if the ground circuit would drop off.

-Dan

[Vmax540]

Dan, Good job ! Thanks to all who helped ! Here is the 86 diagram I promised the difference from the pre-1985 is the T.O.R.S.

[tyler440]

awesome! glad to see you finally won!

so your problem was that the source coil was shorted out against the stator frame? therefore your cdi was not charging, and therefore when the pickup (pulse, trigger) coil told the CDI to fire it couldnt because it had no charge?

i gotta bank the fix in my brain so i can help others when they come around hahaha

[northerngn]

awesome! glad to see you finally won!

so your problem was that the source coil was shorted out against the stator frame? therefore your cdi was not charging, and therefore when the pickup (pulse, trigger) coil told the CDI to fire it couldnt because it had no charge?

i gotta bank the fix in my brain so i can help others when they come around hahaha

In a nutshell, YES

[Vmax540]

Dammmm........ and I was just about to offer you fifty bucks......

[northerngn]

LOL