1990 Buick Century Custom -Plugs not firing

This badboy drove fine, until the other day i turnd the car off and it would not start again, i have deduced that the spark plugs are not firing, but the ignition will turn over and start gasping, but will not start. can anyone help me?

Are you sure the plugs are not firing?? How did you tell they weren't?? Do you have injector pulse? Which means is the injector shooting gas into the cylinders. That is important to know in order to help you out!