[comet240]

hi thursday i was driving and couple times it sputtered then when i parked car wouldnt start but i floored it and it started back up drove some more and cam to intersection while waiting for the light it stalled so i tried again the flooring it it started so figured i good to go but then when light turned green i was 2 feeting it to drive when i put in gear it shut down and i couldnt get it going since then
i did try a trick i did before spray starter fluid in the intake but it didnt work, and yes i got gas pressuire as i smell the gas come through the muffler

so what could it be? would it be just the cam shaft sensor? i even tried exchanging the computer but nothing wrong with the computer. cuz it doesnt fire at all not even on any cylinders.