2004 Ford 6.0L I noticed my truck having issues when I had to start it with starting fluid, and I tried to drive home, engine didn’t sound bad, so I just never shut it off till I pulled into a gas station and it died now wont start, it just cranks but won’t start. Any idea what would cause this?

We changed the oil, coolant, filters, ipr sensor We are getting fuel pressure and oil pressure and engine wants to start it seems. I just don’t know what else to do