We'll get to the timing soon!
Let's see if this makes a difference, if indeed, the throttle linkage is holding the carb open.
From the idle speed screw, look at the throttle arm. There's a rod with a ball socket on each end. It connects the arm to the throttle bell crank.
Pop the rod off of the arm, Now the linkage has no bearing on the carb.
Can you get the idle down now?
Forcing it is not the answer (other stuff can be damaged)
Without seeing this situation, sometimes it's hard to explain.
In a correct situation, if there is a gap between the idle screw and it's stop/ anvil (whatever!) This would mean the throttle plates are COMPLETELY shut, it should not run at all.
It's hard to tell if they are completely shut on a mounted carb (things bent or internally binding might affect proper closing).
Turning the screw till it touches would sorta be zero, additional turning would begin to crack open the plates (which is, where it will begin to run)(or turning it a bit too far and backing it down to proper idle speed.
Gimme these answers so I can see if we are starting to get somewhere. Maybe we can get the demons out so you can continue!
I'll then send you a link that should help you get things checked out and get this tuned right.
Oh Yeah! Nice Lookin' Jeep!
Images (Click to enlarge)
Saturday, May 6th, 2017 AT 8:35 PM