Long crank before starting

Hello, I'm Danny.

First thing you should check is to see if you have sufficient fuel pressure.Might be a weak/failing fuel pump. If you don't have access to a fuel pressure tester most auto parts stores have a tool loaner program and can rent you one.Here is a tutorial showing what's involved for testing:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

The specifications for your Jeep for fuel pressure is 58 p.s.i. Hope this helps and thanks for using 2CarPros.

Danny-