There is no fire going to fuel injectors
motor turns over but will not crank. fuel pressure is 60 lbs. on 2004 Jeep Grand Cherokee
What type of tester was used to check for injector pulse (fire)?? Got ignition spark, to the spark plugs?
you might find the following web site useful with diagnosing your Jeep. http://troubleshootmyvehicle.com/jeep/4.0L/index-of-articles-1