Ok it's been a few weeks. I got the (non epa?) mixture screws from scabber, thanks!
Again bike is a 1980.
I think a big problem was a loose connection at the ignition switch. I tightened that and no more sputtering.
BUT
I went through the carbs again before that. I got a M6 X .5 tap to clean the mixture screw hole threads out with. I replaced the rubber o-rings on the float valve seats. Plastic floats are set to 22mm. Pilot jet is one size bigger than stock, 45. And mains are 2 sizes bigger than stock, 137.5. The new Mixture screw is currently at 1 turn out, doesn't seem lean at all yet. I went from an NGK B8ES to a BP7ES plug, gapped at .7mm.
My left side is still running rich and not showing a good burn. The right plug looks a tad dark, and the left plug looks wet with no real carbon indication. A little bit of smoke comes out at idle, and a bit more after a throttle blip.
I've swapped plugs.
Swapped coils.
Swapped the intake manifold barb covers.
Other than float height being incorrect... what else could it be?
I have that extra pair of '78 carbs I'm cleaning up I could try soon, I just need a larger pilot jet.
Again bike is a 1980.
I think a big problem was a loose connection at the ignition switch. I tightened that and no more sputtering.
BUT
I went through the carbs again before that. I got a M6 X .5 tap to clean the mixture screw hole threads out with. I replaced the rubber o-rings on the float valve seats. Plastic floats are set to 22mm. Pilot jet is one size bigger than stock, 45. And mains are 2 sizes bigger than stock, 137.5. The new Mixture screw is currently at 1 turn out, doesn't seem lean at all yet. I went from an NGK B8ES to a BP7ES plug, gapped at .7mm.
My left side is still running rich and not showing a good burn. The right plug looks a tad dark, and the left plug looks wet with no real carbon indication. A little bit of smoke comes out at idle, and a bit more after a throttle blip.
I've swapped plugs.
Swapped coils.
Swapped the intake manifold barb covers.
Other than float height being incorrect... what else could it be?
I have that extra pair of '78 carbs I'm cleaning up I could try soon, I just need a larger pilot jet.