Have a 97 honda civic ex with a d16y7, just to start off there was a prestige security system installed in this car. The previous owner installed it and T tapped into the already existing wires, including the black and white ignition switch wire and I think the doors lock not sure. But I tool it out and tried to reconnect the white/black wire for the ignition switch. Does crank fine if the battery is jumped. But I've replaced the distributor, spark plug wires are new, spark plugs look fine and gaped right. Replaced the main relay, I have 4 relays I try, I think the one I got from the junkyard made it spark but it doesn't spark anymore. Have 4 different relays to try. Took out fuel pump to confirm if it works, it does. Ground wires and positive battery cable are not in the best shape alot of corrosion but check with a multimeter they all seem to be good even the one on the thermostat housing. Not sure where to turn would love any help. I haven't replaced the ecm yet but I don't think it's the ecm. Also checked the fuses seems to be good. Thanks again.