Check fuses and relays your all over the place start with do you have fuel to cylinders spray starter fluid and see if starts if yes rechech fuel system --if no check for spark no spark start going backwards is their power to coils etc also inspect your wire harness for damage or short

Did you check the ignition coil for spark? Also, U might want to try replacing the coil since a weak spark will not jump the gap within the confines of a pressurized cylinder.