Either the the electrical works or not. ?kind of like vapor lock? does that mean after you let it cool down it's good to go again? Pull out a spark plug, ground it on the block,Wear gloves and safety glasses and have someone turn the key and watch for a spark. Not a bad idea to have a fire extinguisher handy. That will tell you if you have a spark. Electrical and fuel are TWO entirely different problems. Sort of like, I ran out of gas on my way home so I installed a new optima battery. Narrow down your problem and we can help you, other wise we'll make fun of you.
If you do end up rebuilding the carb I would suggest http://www.marksoffroad.net/
98 uzj100. Factory rear-ARB front locked 4.88's. ARB Bull, Warn 9000, Irbis rear bumper, Slee sliders and belly pan. OME t-bars w/863 rears, HID, XM