well today i put my motor back in after being rebuilt put everything in and it fired right up and ran perfect i killed it and started it right back up no problems then i relized my 02s werent plugged up so i killed it and now it wont start anymore any ideas??

 

anybody?

 

unplug the 02s and try again
i dunno, is it getting fuel and spark?

 

how was it running when it was on without the o2's in?

 

was running perfect now it just turns over and over trying to crank but wont at 1st i thought my roller rockers might be too tight but then ithought if that were it it wouldnt have cranked in the first place

 

compression, fuel and ignition...not necessarily in that order........once it starts.........then it becomes a drivability issue..........

 

Pull one of your plugs and see what it looks like.. Maybe you fouled your plugs...