carb or ?

[GN]

My latest problem now is when I am driving the car, it stalls when i come to a stop or let of the gas. In park and neutral it will idle fine. The carb is a rebuilt carter 2bbl stock from napa on a 318. I have the idle mixture screws 2 1/2 turns out. The choke appears to work fine. Just thst that when it is in gear the idle drops . I looked over the vacuum lines and didn't see anything obvious. Curb idle and fast idle not to sure about. I tried to adjust to FSM but not sure if it is done correctly. When i bought the car it came with daul exhaust.

[birdsandbees]

I have never had a carb, on anything, with the mixture screw(s) out 2.5 turns. 1.25 to 1.75 max.

You sure the idle is not just set too low?

[GN]

Curb idle? Which is set first? I will turn the idle mixture screws in 1 turn tomorrow and go from there. I am leaning toward a vacuum leak.

[birdsandbees]

Could be... more air via a vacuum leak would allow / need for more fuel at the idle screw to get a proper air to fuel ratio.

As for idle, I like to get it as low as possible without stalling, gives for a raunchier sound ! 

[myk]

Are the floats at the right level?

Set your desired idle speed and make adjustments afterwards.  You should also be making idle mixture adjustments with a vacuum gauge...

[LaOtto70Charger]

What is the timing at and does changes in rpm change the timing? What rpm is idle at? My 318 likes about 800 rpm.

[GN]

I do not have a tach for the rpms. I turned the idle mixture screws in 1 turn.  Then i rerouted the vacuum lines. The vacuum line from the distributor now goes to rt side of the carb it will idle in drive now . I also plugged the hose coming out of the top port of the 3 prong vacuum port on the front of the manifold. .and ran the middle one to a t fitting on the back vacuum of the manifold. 

[myk]

You need a vacuum gauge more than a tachometer, if you can only have one or the other.  Every adjustment you make should be geared towards getting the highest vacuum...

[1974dodgecharger]

You need a vacuum gauge more than a tachometer, if you can only have one or the other.  Every adjustment you make should be geared towards getting the highest vacuum...

highest vacuum is more for, 'ideal' conditions. 

[68charger440]

I do not have a tach for the rpms. I turned the idle mixture screws in 1 turn.  Then i rerouted the vacuum lines. The vacuum line from the distributor now goes to rt side of the carb it will idle in drive now . I also plugged the hose coming out of the top port of the 3 prong vacuum port on the front of the manifold. .and ran the middle one to a t fitting on the back vacuum of the manifold.  

The vacuum that you plugged was probably the problem.  Now that it is not stalling anymore I would put all of the other settings back to where you started if you were happy with it before it started to die and see where you stand.