Crank, no start

I believe I've already been through most of the cran no start post! My buddy's son just bought his first truck and after driving for a day it cut off on him and we can get it started. They changed the battery ¹st time it died and were able to restart he drove it the next day and sputtered to a stop. We've verified it has fuel up to the fuel rail and the plugs smell if gas when we pull them out. We have verified spark on half the plugs (only checked 4, 2 on each side). Also seems to have good compression (finger of spark plug hole). We've tried to start with fuel directly poured in throttle body and even spark plug hole. It will fire a little bit enough to fill start. Held petal to the floor. Changed 1 bad cam sensor. Swapped and tested starter relay. I have an autel maxisys (new to using, borrowed) that shows good on starter relay and starter signal but and just found this does not show in park, even though dash shows in park. I'll try and upload videos and images. Sorry I know a lot of info. Thanks for the help. Oh, no more error codes (except ABS)

 

Have you tried starting in Neutral?? If its not detecting Park try Neutral..