Couldn't get the 7.3 diesel to run so I put an Injector pump on it.Still wouldn't run.Took the front off the engine to check timing It was ok. So I ordered a diesel pressure tester and checked the pressures and found first two around 125 dry 210 wet then I checked no.5 and it had ZERO pressure dry and Zero wet Couldn't get the turbo off so I/We pulled the front end then the motor.Gotta run to Rural King this AM then tearing a diesel engine apart and find something that is probably FUBAR Hoping it's just a valve.