2002 Saturn SL2 starts for 1 sec. Then dies

I have an 02 sl2 that I changed the engine on it and now it will crank and would start for 1 second then die I can do this all day long. I checked the spark between 2 end on the coil and getting very good spark. When I dump gas in it, it will run fine until the gas is gone, changed the fuel filter but no luck, it seemed like it has a good fuel pressure when I push on the ralling valv. I mean it spray gas relly good. I put a nother pcm in it and did the same. Please help