AA:

1) Loosen the injector lines on the top of the fuel distributor (FD).
2) Remove pump relay, bridge pin sockets 7 & 8 so that the pumps run continuously.
3) Press down on air flow sensor plate; does fuel emerge from the loosened lines?

If yes, retighten lines on FD. Loosen lines at injection nozzles; check for flow at nozzles.
If there is flow at the nozzle inlets, the nozzles themselves may be clogged; they contain a fine screen and a check valve.