1989 Cadillac Deville Hi 89 Coupe 4 5 M Getting Fire Outta Plugs Power Coil

Hi I have a 89 cadillaC coupe deville with a 4.5. I'm not getting fire outta my plugs but I do have power going to the coil. I have replaced the coil, cap, router button and plug wires and still nothing... if u have any ideas and or if u have had this problem before please let me know how to fix it.