305 carb issue, need help
 

305 in my 85 sierra, rochester quadrajet 4bbl carb. The high idle just recently started to stick. If I move the lever thats circled in green down, it idles at normal range. As soon as I hit the throttle, the lever moves itself back up and sticks(sticking the throttle). I think the lever circled in green is a part of the thing circled in red? Not to sure how to fix this issue. Any feedback is appreciated, thanks.

Re: 305 carb issue, need help
 

The lever in green circle is the high idle cam and counterweight.
If you hook the wire back up to the electric choke it'll work like it supposed to.

Re: 305 carb issue, need help
 

choke sticking on?

Re: 305 carb issue, need help
 

Thanks for the reply, I forgot to mention I unplugged the wire to see if it would make a deference. So the high idle cam counterweight is sticking, do you know how I fix that?

Re: 305 carb issue, need help
 

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.

Re: 305 carb issue, need help
 

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.

Re: 305 carb issue, need help
 

I know with my '84 truck the engine has to be running before the choke wire energizes. It has a oil pressure switch in-line.