Well, you have the curb idle adjusting screw on the driver's side,
the fast idle adjusting screw on the passenger side, the choke adjustment
(by spinning choke housing to give it more or less spring tension),
and the two idle adjustment screws on the bottom front.
Make sure your choke is opening, because that would make it run real rich.
Adjust the idle adjustment screws with a tach to get the highest RPM's on the lean side.
Set the curb idle for about 650 to 750 depending on your tranny.
There's a mark on the stepped cam of the fast idle linkage you line that screw up with when the choke is closed.
Kinda hard to explain in writing. Best bet would be to get a shop manual or go in Pep Boys or somewhere and "browse" a little. Remember, you'll be best looking in a Ford manual.
Find a MANIFOLD vacuum source and hook your vacuum gauge to that, If you dont have a vacuum gauge.....get one!
After the engine is warm, turn it off and find the "mixture screws" 1 per barrel underneath the fuel bowl. Turn the screws all the way in, but be gentle (you could damage them).
Then turn them out 2 full turns be sure that they are equal.
Start the engine and set the curb idle by adjusting the screw on the throttle arm.
Now adjust the 2 "mixture screws" together in or out to obtain the highest vacuum reading.
You may need to readjust the curb idle screw during this to obtain the correct rpm.
Any questions do a search on www.Jeepsunlimited.com
in the CJ Tech section for mc2100 tuning
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