93c1sol

i finally got my turbo motor started. For the last week all it has been doing was cranking, but it would never fire. Finally we sprayed some starting fluid through the throttle body and started right up but would not stay running without constantly spraying it. Obviously i'm having a lack of fuel. We tested the pump, everything is working and we are getting 12.5v while cranking and while it's running. fuel fulter is pretty new, bought that 6 months ago, have a brand new aem fuel pressure regulator and tried swapping a stock one. Haven't been able to test fuel pressure yet....what other things could possibley be wrong?