89 camaro v8 5.7L, tune port fuel--Not getting power to injectors

I have a 89 chevy camaro v8 5.7L, tune port fuel injetion. My car won't start it has been sitting since 2003, I am getting fuel to the engine but not to the injectors. The injectors work, but they are not getting any power.
I have changed:
fuel pump, fuel filter, ignition module, fuel pressure regulator, ECM computer, battery

I have checked:
Ohms- all avagered at 16.2, fuel rail and injectors work, car starts with starter fluid for a few seconds and cuts off, i bought new spark plugs but haven't changed them yet and car has all it's fluilds.

I really love this car and I don't know how to get it working again. Please give me any info, any thing would help. Thank's