Jeep cranks but wont start

Plugs, wires, coils, timing, ECM, etc. Work it back from the plugs and see what you find. If you find nothing then move to fuel delivery side.

Thank you for your response. i now have spark and it runs on starting fluid but wont run otherwise. I replaced all of the fuel, the fuel pump works as that is what i used to get the old fuel out, but still doesnt run.

If it runs with starter fluid, you probably have a clogged filter or a line blockage coming to the carb/fuel injectors causing low pressure or flow.