I have a 1992 Honda Civic Si 1.6 engine.Engine will not start.Aleady replaced the disributor and main relay.Engine light stays on during cranking.Checked fuel supply line going into fuel filter while cranking engine,there was no fuel or pressure,so replaced fuel pump.Engine started after several attempts.But would not restart after shutdown.Same problem,no fuel output from fuel supply line.I am not hearing fuel pump kick in during start.Physically checked inside ECU,it was spotless.I have no diagnostic equipment.Suspect ECU or other fuel control relay.What next?