My 77 CJ7 has run for years without any attention, not that I put any great miles on it. This summer it decided it was going to be difficult, so now I have to remember how a carb works, with very small success.
I took it all apart and cleaned it, and blew out the jets. Put it all back together and tried it, no dice. When I come off of throttle, it dies unless I very carefully feather it down to idle. I’m clueless about what’s wrong, and have run out of dead chickens to wave over the necromantic device.
I think it would be less trouble to pull the engine and put in a spare 4.0L I have on the shelf.
I don’t have experience with that carb, but two old vehicles: One was some slime goo had clogged one of the small carb holes. Looked like maybe a rubber gasket had reacted to something and liquified and been sucked into the hole. The other car having the issue you mention was actually a faulty EGR valve getting stuck.