I've tried everything. I have a generator with a flathead inline 6 Lincoln. 40's or 50's era. Haven't used it for years, now I remember why. In the last week, I've rebuilt the carb 4 times. I can get it to idle smooth at 3/4 choke, but when I open the throttle it dies.

I've treid plugging the PCV valve and it helped...a little.

It has a single barrel updraft. There is an adjustment screw on top and one on the bottom. They both work and effect the engine, but I have no idea where to preset them. I also don't know which I should adjust for low speed or high speed. or if one is just air and one fuel.

Any ideas?