u/Glad_Lavishness2604

Changed spark plugs, spark plug wires, distributor, computer, injectors, fuel pump, fuel pump relay, alternator. Battery was installed in reverse so some of this needed to be replaced but car still wont start. Started up on starting fluid and with starting fluid the inital start gets you all 8 cylinders to fire and then she slowly dies. I feathered the gas and only the passenger side is firing and not all cylinders in that bank. (the only spark plug i replaced prior to replacing ALL the spark plugs was for cylinder 3 which was the only cylinder firing and led me to believe all the spark plugs needed to be changed) but i get 40psi through the fuel rail and everything else is new or cleaned. I dont know what to do now, my friend is a self proclaimed mustang expert and hes got no idea. It was a track car before i got it but its still mostly stock if that helps.

Swapped the ignition coil, TFi module, computer, and fuel pump relay because the battery had been installed backwards. I got the car on a trade so i dont know everything about it.

Ive done resistance checks to the spark plugs from the battery, and voltage checks from the coil to the spark plug. Ive checked the resistance through the fuel pump. All these checks are good and within tolerances. The only thing not installed is the alternator (as im working on rebuilding it) and as i understand the car should start at least but it wont start unless i spray with starting fluid. Double checked fuel pump is pumping, and that theres fuel, and checked that spark plugs are sparking.

Current plan is to finish the alternator but all things considered, i need somewhere to look for problems next and im not sure Where i should look next. Suggestions, help plz and thank you

Troubleshooting 93 mustang