The fuel pump test jumper will make the fuel pump run if the ignition is on. To test, insert the jumper:
- http://www.4crawler.com/4x4/CheapTricks/index.shtml#FuelPump
Turn the key to the ON position and listen for the relay on the passenger side to click. If not, the relay is dead or the wiring to it is bad. If it does click, is the fuel pump running. How to tell? Listen for it, passenger rear wheel well to hear the pump or up front listen for a hissing sound from the fuel pressure regulator. No sound; either the relay is dead or the pump is dead. How to tell which? Pull the connector at the pump and test for voltage. Should be 12 volts if the relay is working.

If all the above is good, then you are (or should be) getting fuel to the injectors. Problem lies elsewhere.