Engine will not crank after replacing the timing belt?

Vehicle ran fine. Drove to store and timing belt broke, fixed that but still no crank. Found out when belt broke it bent valve stems. Replaced all 8 and compressioned them. Firing order is 1 2 4 3. Set distributor rotor on number 1. Finally cranked but ran rough and missing then shut off. Repeated the distributor and timing but now wont crank at all. Please help.