death

Hey guys, Doing an s13 rb20det swap Ive gotten as far as putting gas to the engine Had few problems with the fuel rail install. fixed the fuel rail when it was leaking, Im not sure if this has something to do with it. The car will crank but wont turn over, battery isnt the issue. I unplugged the MAF, checked the relays, Im curious if the fuel isnt igniting or if its the ECU, I dont wont to keep letting the fuel pump run. im worried it will flood the motor, but I do hear the fuel pump running so that cannot be the problem. When key is into on position I hear all the relays click. Its a fresh Swap the motor hasnt even started for a good bit. I could only get it to start for maby a couple seconds when I sprayed some starter fluid in it. It just wont run with gas, I have a few gallons in the tank, is it a posiablity I'll need more gas? Any Ideas? Please help.