95 Accord crank but no start

I’ve got the 2.2 non vtec. I replaced the ignitor,wires,cap,rotor,coil,plugs,fuel pump,main relay,tried 4 different ecus,and replaced the starter. I tried to start it on starting fluid just to see if fuel was the issue and yet no dice. If anyone has any slightest bit of a clue as to why it won’t start but will crank please let me know. I do have fuel pressure at the rail. Although plug #3 was cleaner then plug #4 and I haven’t checked the other two.