1988 Grand Am won't start

Do you have a checvk engine light? Also don't used starting fluid or the engine might end up in pieces.

Explain about an injector pulse. Have you put a noid light on the wire connector to the injector to see if you have a pulse?

The injector 12v line (gray wire) goes through the oil pressure switch after the fuel pump relay turns on ( 3-8 seconds.) This prevents the engine from ruining if you lose oil pressure. You probably have a bad oil pressure switch

Did you check to see that the fuel pump relay is working? The way it works is it provides power to the fuel pump for 3-8 seconds. By that time engine oil presure is up and the 12V is coupled to the fuel pump. I would like you to check the voltage on the fuel injector gray wires like this.

Put a 12v test light or meter on the injector gray wire. Turn the key on and watch the light it should go on for 3.8 seconds and go off.

Crank the engine, the light should come back on. Try this and let me know the results.

There is a single loose red wire with a green or black terminal in the engine compartment. I want you to try and locate it.