unplug your ICP sensor and see if it will start.....
Check the high pressure oil pump resevour for oil
Check your actual oil level
you could try tapping on the IPR valve with something....just dont hit it hard enough to dent it....
those are a few easy cheap things to try....
also, is your tach registering while cranking ( i know you said you replaced the cam sensor, but u should never assume any part is good, ive seen brand new parts that were no good)