Trouble Getting Going

[ChrisK]

They're 9's.

Again, I doubt that would account for completely not being able to ride away from a stop. Poor performance, sure. But not no performance, maybe I'm wrong though.

I don't think the clearances on the timing pick ups would have changed since I didn't take them off their bracket, and I reinstalled the bracket exactly as it was before.

The bike can rev up to 4 grand and more when in neutral, after warming up at idle for a couple minutes. Once under load it bogs down fast.

[ChrisK]

I should add I ran the 9's all last year, with great success. Granted, that was with the Mikunis.

[koko64]

Okam's razor.
Change the plugs. You'd be surprised.

It dont take much to put the pickups out, but do plugs first, then jet test and pickups (and timing case) last if needed.

NGK 9s are generally too cold, but the Exactfit coils are pretty hot if you got 'em and they can work. (Check with Chris Kelley).
60 slow jets are often too rich, add a too cold plug and you'll have fouled plugs and sluggish performance.

[ChrisK]

Occam, okay thanks. I'll try the plugs and report back. Will be soon (I have a pair of D8EA's sitting on the shelf).

[ChrisK]

Not getting spark on the vertical cylinder... That'll cause those symptoms.

Now what? I haven't changed anything electrical.

When I tried the other plugs, 8's, I noticed there's no reading on the speedo, which is an Acewell. It worked earlier today, now there's literally no text or graphics, but it still lights up blue.

ALSO, the turn signals didn't work right when I tried the 8's. Put the 9's back in and they work. But I've been taking the seat off and on so maybe the flasher is getting jostled.

[ducpainter]

Are the 9's resistor?

I noticed you said D8ea which is not a resistor plug.

[ChrisK]

Yes

[koko64]

Occam, okay thanks. I'll try the plugs and report back. Will be soon (I have a pair of D8EA's sitting on the shelf).

Occam, ok pardon me , I left college in '86 .

Could be some electrickery happinin' there. I would use R plugs.

[ducpainter]

Yes

Is the tach hooked up to the vertical coil?

I'd have to check, but I'm pretty sure you want a DPR8EA-9

[ChrisK]

My 9 plugs are DR9EA's.

Tach is hooked up to horizontal, the working cylinder.

[koko64]

Is the tach hooked up to the vertical coil?

I'd have to check, but I'm pretty sure you want a DPR8EA-9

Yep, correct plug, 8s the heat, 9s the gap.

[ChrisK]

The four wires coming out of the alternator cover seem to be in good condition and plugged in up by the coils just fine. Haven't been unplugged since my last ride last year. The coils are mounted solid and the spark plug wires seem fine all the way down to the plugs.

Can anyone think of anything else that would prevent one cylinder from getting spark?

[koko64]

Both cylinders firing with the R plugs and dash and indicators working with them?
If so try the plugs DP mentioned. If only one cylinder no matter what you do, then I would suspect the pickup. Does that pickup match the cylinder not lighting? Swap ignition modules and plugs to check them (easy tests).
If its the pickup then its a PITA but not too hard, just tedious.

Also jetting to be set once both cylinders working. Thats next job.

[ChrisK]

No, doesn't matter which plug, the one cylinder doesn't fire.

I'll try swapping modules and see what happens.

[ChrisK]

I swapped the ignition modules and now it's reversed, no spark on horizontal.