Idle problem

The bottom plate goes with the slots down. Examine the plate closely for being rotted out and leaking vacuum. Common filaure.
As far as the carb, the idle mixture screws on the bottom control idle quality. If the power valve is bad, it will enrichen the mixture to the point of not being able to idle. If the air bleeds on the mixture screws are blocked, the same result.
You need to find a shop with a mature mechanic like myself that grew up with these carbs that can re build it for you.

Roy

You aren't gonna be able to adjust the mix screws, till you get your idle down to specs

. Which I do not know, probably 600-700 RPM

Right now you are running on the mains at 1200. Not even on the idle circuit.

As far as tweaking them in, once you get down, one of us can explain your adjustments.

Are you timed correctly. Need to get RPM down to do that also!

Let us know what you need!

The Medic

The power valve is on the bottom of the front of the carb and under the 4 screw cover. They are a common failure as well.
Yes, holley does make a replacement carb but it will be hard to find. Not very popular today. I still would find someone to rebuild it for you.

Roy

Yep, the distance is good. The rubber bladder fails and leaks fuel into the system making it run rich. The small gasket is the one for the threads and the big one is the cover.
By the way, if it backfires it could rupture the bladder again. Make sure the timing is correct and the points are gapped at.018 and the dwell is 30-32 degrees.

Roy

ASEMaster6371,

When are you joining up?

The Medic

Hello CJ
Signed up last night. Just getting use to the site and what I have to do.

Roy

Wonderful!

I'm more of a old Jeep and old Ford feller

Sometimes I get in over my head, when I think I'm answering a "Generic Fix" on a newer rig.

Mind if I come get you, if I feel like I'm drowning!

I do not know a bunch about the computer rigs.I'm trying to learn. Here!

If you see, I'm tracking the wrong way, feel free to jump in on something I'm answering!

I see you know your stuff really well, and also look out for the feller on the other end too.I try to give any and all info that I can too. Right down to teaching 'em how to use their voltmeter etc.I call it "Holding their hand"

I recall when I was pretty stupid with my own fixes (still am with wife's newer stuff), hard to get "Real Help", usually it was 'Hearsay" and not "For Real Say" suggestions.

I've usually got the CJs covered, until computer crap was installed, if computer controlled emissions is the issue, I get lost.I can work around it, if they don't care or are not checked

You seem to be one who cares, and are willing to go the extra step.

Welcome aboard

The Medic

Sure. Let me know when you need help. I will do what I can. My email is roybelding@comcast. Net you will do better getting me there.

Roy