Got spark and fuel but will not start

[nine9six]

Been trying to start my M52 odb2 swap to start but with no luck. I have removed the fuel rail from the manifold and crank the engine to see that there is indeed fuel spraying from each injectors. I have also tried to remove spark plug #1 and crank it near a ground and also do see spark. So what could be the cause of my crank no start? Could it be my sparks are weak or if I see sparks then it should be good? How about for fuel? I do see fuel coming out of all of the injectors but I can't tell if it is weak or not. Perhaps bad FPR? I am at my wits end

[nine9six]

Update, I got it to start once out of every 10-15 tries. After it started up, it would die out within a second to two.

Just used INPA to clear adaptation and I was able to get it to start and stay started for almost 10 seconds but it would die out again. No codes but I am going to try to button everything up to see if that would help.