can't get car to idle down below 2 grand

[billison]

i have a hard time getting my car to idle down below 2 grand, here is what i have, It's a 85, former cfi car, just put a intake and carb, procomp hei dizzy, still has stock fuel pump and i have the idle screw all the way back. The only things i can think of is maybe the stock pump is giving to much fuel or maybe it has something to do with my choke? thanks for the help.

 

[stangjunkie]

sounds like the fuel pump is providing too much fuel, you should have swapped a mechanical fuel pump on when you went to carb IMO

 

[billison]

i'm starting to think so, maybe a fuel regulator, i'm gonna get a fuel pressure gauge and see what my pressure is, is there a good way to test my choke "it's electric"

 

[mattmcdan]

7-9psi is max for a carb setup. You are probably pushing fuel down in the carb from too much pressure.

p.s. If the choke opens after a few seconds on its own, it works

 

[billison]

i'm thinking it's the fuel pump, i checked the vac lines and replaced one and fired it up and ideled at like 12 g, i was like rock on, but it died after like 30 seconds, and i realized i did'nt turn my fuel pump on, so i played with it a bit and found if i had the pump on the rpm's stayed high, but if i turned it on long enuff to get pressure then turned it on the rpm's stayed lower, so i think i need a regulator