1995 Nissan Altima stops running

Its actually a common this to my understanding with many different possible fixs. First start the car and wiggle the key to make sure its not a bad ignition cylinder. If its not that check your o ring under the distributor rotor button. If theres any oil at all replace the o ring. If that dont work check to see if u have exhaust pressure at tail pipe. If not its a clogged exhaust. Then go on to check your crank positioning sensor. Could also be bad wiring somewhere throughout the car. Good look if you narrow it down more ill have more answers