Calling all Motorcraft carb gurus!
Bought a Motorcraft 2100 1.21 carb from a used parts place and rebuilt it. Put it on my 2.3 and during the feature tonight it would stumble every now and then about half way down the straight aways. If I feathered the throttle it would recover and pull well. On the last lap it started falling off really bad like it was running low on fuel. I am not familiar with these carbs so I don't know what problems they could encounter.
I haven't pulled the plugs or anything yet but will do that tomorrow and maybe have some more information.