Choke issue. Pictures.

[thered56]

I've been doing my research. That said, everything I know about carbs I've learned over the past few days. It's giving me a headache.

I've been struggling with this issue for some time. I start the car, having to manually keep up the RPM's for a bit to keep it from stalling. Afterwards, it'll idle around 2000-2500RPM, sometimes going down to 1500RPM after anywhere between 2-15 minutes, sometimes not at all. I pulled of the air cleaner, and someone had tied some wire to keep the choke from going below a certain point, which also wouldn't allow the choke plate to fully close (about where I'm holding it):

I removed the wire and here's where it sits now:

And, well now it wants to rev away at idle, up to 3000RPM, even 4000RPM. I checked my vacuum pressure. 17". Now according to this thread (https://www.3geez.com/forum/showthread.php?t=48569) I've got late ignition timing. But besides that, I'm thinking that my choke diaphragm is no good. What do ya guys figure?

btw It also diesels on after I shut it down unless it's settled down to idling at 1500RPM, which I often have to rev it right up to 4000RPM to get it to do (I HATE to keep doing this).

[g.frost]

Download the manual for your car, link is reference on this site.
Refer to section 12 and follow test procedures for the 'Choke Opener' and then the 'Fast Idle Unloader'.

[thered56]

Section 12 is for fuel injected vehicles. I don't have the "fast idle control valve" of the FI models.

Edit: I found a carbed section in the '88 manual. Thanks g.frost, I will follow these steps. Wish me well!

[g.frost]

.....So, how'd it go? Was it the choke opener leaking, or was the leak somewhere else in the choke opener vac circuit?

[91lowrider]

I need help!!! My choke plate stays open all the time. I know they say its suppose to close when warm. What do i do?