My jeep runs great, when it's driven.....

That being said, it is not my DD. When it sits for a couple of days, it takes a long time to start. It cranks and cranks, but takes a while to start. If it sits just one day, it is fine. Starts right up quickly and idles smoothly. I've yet to see any need to switching to MPI since she idles and runs nice.

It is a 1990 with a carburated 258. When it is cranking I don't smell gas like I did with my old mustang nor do I see any discolored exhaust come from my exhaust tip. That leads me to believe that my fuel line is draining back into my gas tank. Is this possible? Does a carburated engine have an electric pump in the tank or near it? Is my mechanical pump getting ready to fail? Does it have a mechanical pump at all?

I had the same problem on my Jeep about a year ago, It was my fuel pump. I don't know about anything as new as a '90 and what they use for pumps but my '76 just has a mechanical pump and if they get a little worn they will leak back and you either hafta crank them forever or prime the carb with some sort of combustible persuasionary fluid.
Hope that helps
John

Yeah, I already assumed it might be the pump and just bought one. I'll put it in soon. Thanks John.