My 1988 Toronado will not fire up! The engine will turn, it just won't fire up This happend when I was flushing out my radiator. Everything was working fine until I drained the radiator again to put the water in and another bottle of flush. I went to start the car back up, all it would do is turn and wouldn't fire up. I left it alone for the night, had to go to school the next day. My dad cranked it during the day and it fired up but he said it was running like ****. Then it wouldn't start back up again. I now have the fuel off to see if that was the reason, but the engine had fuel up in it. So i'm still gonna replace it to see what happens. I also have a bad oxygen sensor, could that cause it not to fire up? or what else could it be thats causing this? Camshaft? If I remember my dad did say it was getting spark. What could be causing it not to fire up? Any help is really appreciated

Start by finding out if you are getting spark to all cylinders, then check to see if you are getting fuel pressure at the rail. Listen to each injector to see if it is firing. Once we know if it a spark or fuel issue we can narrow it down.