5.3 first start wont start

[mrhino]

I need a little help guys, went to start my 5.3 project for the first time today and it wont start. here's the deal. It has 58psi on the fuel rail, it has spark, it sounds just like the timing is off. shot to shots of starting fluid in the throttlbody and it fires right up and and will run for a second or so till the either is gone. So it sounds like the injectors aren't working, but i checked and they all have power. What else would be keeping it from running on its own. thanks for the help