need help car wount start

Take out all the plugs and crank it over for about 10 secs.
If you smell gas then the Injection part is working.
NOw put all the plugs and wires back in the head except for the #1 plug and wire but place the wire back on the plug and hold it
about 1/8th fom some metal and have a friend crank it over,
this will check for spark. If none than a ignition problem.
Also did you swap the engine with an exact replacement.
You might need to change out the ECU.. But start with the basics first. I dont know your knowledge of mechanics So This is all I can say For now Dominic