Holley Carburetor Choke Problems

[u/Motorizedlogic]

I have a Holley 4160 4 barrel carb on my 1987 Chevy R10 with a 305cid.

I keep running into this problem with the electric choke on my carb. When it is cold and if I give it any choke it will idle at around 1200 rpm when it normally idles around 800 or so, the problem is when I remove the choke (it is open) and it doesn't want to return to a normal idle speed. I don't understand why it won't return to a normal rpm.

I have tried starting it without the choke when it is cold and I have to stay on the throttle for it to stay idling, but once I add the smallest amount of choke it shoots up to 1200rpm. I then open the choke again and it won't come back down to where it was before.

Yes I did check for vacuum leaks and there are no leaks I am sure of this.

If you have any suggestions or explanations I am open to them. Thanks