305 carb issue, need help

[bnoon]

Originally Posted by geezer#99

You need to lean your choke down. THe black cap is riveted on. You need to replace the rivets with screws and then you can rotate the cap cw to lean it. Turning the cap ccw richens it.
I adjust mine twice a year. Richer in winter, leaner in the summer.
Look here for info on that.
http://www.vetteprojects.com/kstyer/quadrajet_3.htm
You could also spray some carb and choke cleaner on all the choke parts.

All of ^this^ plus your choke coil may be broken. If you pull the air cleaner off when totally cold (like sat all day or all night), kick the gas pedal once to set the choke. Then, turn on your key (without trying to start the engine and with the choke power wire attached) the choke should pull off after about 3-5 minutes even without any engine heat.