it's not a major problem, it runs and it idles very nicely.. but I replaced the Accelerator pump and I found a really big vacuum leak and fixed it. and now at 500ROM in Gear it runs very very nicely, no shakes at all, but there is a new problem which has developed after readjusting the Fuel/Air ratio. Now whenever I push the accelerator it cuts out. It cuts out then revs and runs great. just that cut out when I first hit the accelerator. It is like it hesitates, then runs fine. This is a Holley 2 Barrel that came original with the vehicle, no idea what the number or CFM anything like that are or where to find them.. Does anyone else have any ideas as to what could be causing this? it is definitely a carburetor issue i my opinion, but what??? I am going to look through my repair manual.. it is almost acting like it is flooding when I step on it.. it did not do this until I replaced the accelerator pump and fixed the vacuum leaks and adjusted fuel/air ratio. This is strange to me.. That vacuum leak has been there ever since I bought this Ranchero.. it's good to hear it running smoothly at Idle for the first time since I bought it, but now I have no power because it cuts out like this.. and it makes a strange quick high pitched burping sound when I throttle it, kinda sounds like a duck, then stumbles, then idles up, the sound comes from inside the butterfly valve in the top. before when I would goose it like that it would make a very loud Hiss. Something is wrong here I am pulling my Repair Manual, but I am trying to diagnose this.. need some help please..