There are so many people helping with their experiences and throwing parts at their cars, lets start with a real world back yard mechanic diagnosis without a scan tool and no experience. Can you run power, 12 volts to the connector back at the fuel pump (correct wire of course) and see if it will work and start the car. We will work our way back to the fuel pump relay as the computer controls the input to the relay as the computer also needs to see certain items working prior to letting the car start, you say if you spray in some form of fuel, the engine will start, this does point to a fuel related problem. Do you have a volt meter to check for power and grounds at the fuel pump connector while trying to start the car?