Rb20 help, no start

[adrianespalda22]

Almost done with my swap
All I need is ic piping and I'm done
Had to rebuild the whole motor
So I decided to try and start it but it's not :/
There's fuel pressure from fuel pump
There's Injector pulse
There's spark
I'm assuming timing might be off? I heard the cas has to be a certain degrees when at tdc?true?not true? Those are my only other ideas I can think of
Any feedback would be nice

[redline racer510]

Check your timing belt make sure your mechanical timing is correct

[adrianespalda22]

ok timings ok, i adjusted the cas and it starts but itll only stay on for like 5-10 sec then itll die. i think its just a couple more teeth off!!!