you must be talking about your 1990 yj since you stated you have a choke. i relly hate the carbs they put on those. didnt they have some short of a stepper valve that can cause a lean condition when the stop working and get stuck? all i know is when any of my small engines with carbs only run right with the choke partial on its always a clog in the main get. so if you have enuff fuel pressure then its a restriction of fuel somewhere in the carb. i had a 86 cj that i swopped the carb on with one from a 2 barrlell from a ford truck with a 302 v8. i had to fab an adaptor but it wasnt hard, it ran so much better from idle to full throttle.
as for the ticking it concerns me that it seems to be loud at the mid rpm. if it was lifter you would think it would be louder at lowwer rpp and quiet when the oil pressure goes up with throttle increase. try replacing one quart of oil with marvel mistery oil and run it for 500 miles then see if it goes away. then change the oil. also add it to the gas tank . ru you sure its a lifter/valve tick and not a piston pin or rod?.
92,yj,4.0.ax15,rubi4-1 TC,6" custom lift,hombrew bumpers,sliders, jack and shovel mount,anti wrap bar,posi-lock,d44 rear,d30 front both locked,oba,cb,hand throttle, 35" tires,tag flairs