The ECM is what pulses the injectors once it gets an RPM signal from the distributor. If there is no signal, it will not pulse or ground the wire that goes to the ECM.
You would need a scope ideally to check for a signal from the distributor. The fact you have spark tells me it is not that. I attached wiring diagrams for you.
You need to verify power at the ECM on the wires I attached. If there is then you need a noid light for the connector for the injector. Crank the engine and see if it flashes.
Chances are you need an ECM.
Images (Click to enlarge)
Tuesday, March 24th, 2020 AT 3:08 PM