Back again with this one, I'd love some ideas from folks who have been here...sorry it's long....
I'm still having troubles with the #1 cylinder. It is firing, it does have fuel.
It is carbon-fouling the plugs...so it's not getting enough fuel right?
I can ride the bike, but only on 3 cylinders. If I rev it pretty high while riding, the #1 cylinder kicks in but within a few seconds it kicks back out again. There's good spark and plenty of fuel and changing/re-gapping plugs doesn't help. Stock pipes. This is a carb issue, I'm prety sure.
I'm doing everything I can possibly think of before I pull those #$@& carbs again. I'm trying to synch the carbs, but either something more is going on, or they are so far out of synch it's just scary. I did #2 to #1 and it was way off, and I had to set the idle screw lower. Then I did #2 to #3, and it idled so high I couldn't get the idle any lower. I'm not pushing with the screwdriver to get a false high idle (did that before), what else could be going on?
No jets were clogged when I put the carbs back together, everything was very clean. The #1 diaphragm looks great. The needle jet had a spot of carbon on it near the base where it touches the slide; is it not seating correctly?
The stock pilot screw caps are in place and all of them look to be adjusted the same. These cannot be adjusted on the bike, not without a very special tool from Honda (I tried every short or offset screwdriver out there, trust me).
So...it idles on 3 cylinders and runs on 3 cylinders, and will briefly when revved high run on all four. Then as the revs drop it goes back to three.
I'd appreciate any ideas, it takes me hours and hours to get the carbs out and back in. And I'll do that of course, but only if I have to. I'd like to try anything feasible before I do it, though.