1986 Jeep Comanche Starts but will not stay running

I just bought a 1986 Jeep Comanche with a 2.5 4 cylinder. It has been sitting for a while. Its starts but will not run. I have cleaned the fuel tank and added new gas checked the throttle position sensor, and it is ok. It has 18 pounds of fuel pressure, but does not seem to be getting enough fuel to run on. Could you please help?

Thanks Chris