Hey guys, newbie here, i have a late year 1970 270hp 350 with a early year 71 engine and q-jet (original from factory) 40 some thousand miles, car was sitting for 20 years, started up every few years, i am in the process of restoring her and am running into a bad accelerator pump leak. i had the carb rebuilt last fall by a carb guy, ( will be calling him later today but wanted to pass this by some vette guys too) she will start up fine and high idle at 1000 rpm with no leak but after she iswarm and you give her a rev or too to get off of high idle she will stumble around 4-500 rpm and leak like a sive aroundthe plunger for the acc pump. ihave had her running good last fall and set the idle then around 700 rpm. realy havent put any miles on the rebuilt carb, some things to note are:
new gas tank a few years ago
new fuel pump and hoses
blew out fuel lines with compressed air
new filter
i have had another issue last fall with this carb too, i guess the needle and seat were sticking because the car would stall and not squirt fuel even though no blockages in the filter etc. had the carb builder put in a new needle and seat and it seemed to have helped, but now i have this issue, any thoughts? too much fuel pressure? thanks in advance