Hi Guys,
Mike E, We havent checked the vac advance per say, but have tried manually advancing and retarding the distributor while it is faltering, without being able to find a sweet spot where it smooths out. There is only one fuel filter, which is new.
MikeStem, The carb we swapped on is newly rebuilt and runs like a top on its engine. The coil is new, with an internal resistor, I have also tried an external resistor coil with a ballast resistor with no change. Have also tried a couple of different condensers. Yes, it idles consistantly and just falters at mid and high rev.
Shop Shark, Yes, it is an internal resistor coil, brand new.
Thanks guys, keep the ideas coming!
Tim