just updating on my first post,I see there were no replys.fuel pressure test gives 14 psi while priming tbi,regulator does not hold prime after relay shuts off,changed regulator diaphragm same thing happens wont hold prime.I have now changed fuel pump,injector,regulator and computer,no codes,no start.squirt some fuel in the tbi and away she goes.any help would be greatly appreciated.thanks seanrocks.

id check your power sorce to the injector, and check to make sure its actualy getting the signal to fire.