The description make it sound like the 2.8. As leakage on the other engines is a bit difficult to observe.

If it is the 2.8 and it is a Trooper, do the 4-way flashers work? If not replace the module. No kidding, there is some strange bit of wiring in there that affects the injectors. The engine will run with fuel poured down the throat of the TB, but there is zero fuel from the injectors.

There is also a chance of it being bad/clogged injectors. If that is the case, I think replacement is the best option. Jim or Ed have a link for cheap replacements.

Good Luck,
Michael