Turns over but wont start

I was driving down a highway when my ac belt broke. My car shut off and would not start back up. It would turn over but would not start back up. We came back the next day to take a look at it. The lower timing belt cover was tore up by the belt. So we decided to check the timing. The timing was fine. We replaced the crankshaft sensor. We have spark and fuel. Checked fuses and relays, all good. What else could it be. It turns over but will not start. We check all around the area to make sure nothing might of been knocked lose by the belt breaking. Lost of what to look for next