SNIP the more I think of your problem the more I am convinced that you need to eliminate the fuel supply as the potential problem. You could really get yourself down a rabbit hole without knowing for certain.
Mike
A fuel pressure gage tied into the lines feeding the carb's (mounted outside the cab for safety) - will quickly reveal a fuel supply issue.
I have not worked on a B carb for a long time .. is the needle and set big enough to keep up with a big main jet?
Thanks Mike - so I've had a fuel pressure gauge on this a couple of times tied in right before the fuel block and it pulses or bounces from 2-5 lbs.
I assume this is because it's a manual pump and it's reading the pulses?? Both pumps I've had on it showed the same pressure.The action on the gauge stays the same running up to 4,000 rpm and then when starts missing.
Good thought on the needle and seat assembly - I would think it would be fine.
