A simple diagnostic way to test if this is the case or not would be to get (or make) a jumper lead to connect the idle solenoid to the positive terminal on the battery and see if that changes the condition of your truck.

I used to have a problem with my 1980 where it would intermittently run badly. I ran a switch into the cab of the truck that would cut the idle solenoid. Doing so would fix the problem. It later turned out that the accelerator pump was leaking (usually after application of near full throttle). Cutting the idle solenoid leaned out the carb just enough to let the truck keep running. Adding the switch kept the truck driveable until I ultimately rebuilt the carb. After rebuilding I kept the idle switch installed and on long trips I would cut the idle circuit resulting in me picking up 2 or 3 points in the MPG department.

 

had this same type of issue with the stock carb after 2 rebuilds. its crap. drop the money on a 32/36 weber, well worth the money. my truck pulls harder, gets better mileage and is way easier to adjust. i went with the manual choke to rule out any issues in that department. (i de-smogged at the same time too so im sure that helped as well.)

 

i've got a buddy of mine pending to do that with my old 82 i sold him, he just doesnt have the mottovation to do it right now i guess.

 

Was the carb soaked in cleaner or was it a can of carb cleaner and a tooth brush clean up ? prep is a big part of a rebuild also checking for worn parts and warped mating surfaces . I just noticed the part I was answering was a year old.

 

When I bought my 82 22r I drove it away from the place and it stalled out all the way home. I ran the ground wire on the fuel cutoff solinoid on the carb directly to the ground on the battery. Problem solved and I haven't had an issue since.

 

Similar problem. 83 22r camper won't idle. Sight glass was always full. I installed rebuilt Aisan carb today,
sight glass is still full! Mechanical fuel pump with spacer 4-5 PSI. All searches
say to check the sight glass level, but no one addresses full sight glass. I doubt
float level is off because of new rebuild.