i bought an 84 z28 with an older 350 in it and it has a weber 4bl carb
the previous owner messed with the fuel adjustment screws cause he thought it wasnt running right, turned out to be a fuel pump going out
now im trying to get it back running like it was
ive founds some crude information on tuning it but no matter how many times i try to get under the hood it just seems to stumble for a second when accelerating

its got the two adjustments in the front, not sure which one is responsible for what

from what i understand is back out the idle screw till its all the way out
then i turn the adjustments in till it dies, and it does
then i turn the back out in quarter turn incraments till rpms raise, i keep coming out till rpms fall and then turn it back in a half turn?

if im doing something wrong or if you can answer any of my questions thanks for the help

 

weber carb?!? Whoa, weird.

Got a part # or anything? Sounds like a reasonable way to set idle speed/mixture. Are there any other adjustments on the carb? I'm totally green to that carb, but you haven't gotten any other responses so...

 

sorry typo webber
im not sure as of model number ive been trying to get my hands on a digi camera so i can snap some pics
just not sure which screw is doing what
i got it to where it will fry the tires on a stading start but once it starts rolling it just stumbles and feels week

this motor feels like it has some power but something just isnt right
thanks for the reply though
sorry for the lack of knowledge on my behalf

 

AKA edelbrock carb "debaged"