Engine Performance problem
1999 GMC Suburban V8 Four Wheel Drive Automatic 151000 miles

backed into a level parking stall to wait for wife getting fast food and decided to turn off engine to save gas.of course she comes out 2 min. latter...now truck cranks wont start...will start briefly with starter fluid dies when fluid burns off....checked fuel pressure at test fitting 42psi need 60-66 could not do a complete test with cut-out on return line...oh what to do

thanks johnny j