The 2 access panels are for seperate things the passenger side panel is for the pump, the center one is for evap stuff I think I have never needed to get that one open.
This is a 420a motor as it’s an esi.
Check for spark by just pulling a plug wire either away from a plug or the coil pack in the center of the valve cover. If it can’t bridge a 1/2" gap it sure as fuck won’t jump the electrode. Next pull a spark plug and clean it with sand paper and a wire brush. Or get new regular replacement ngk’s. You don’t need 10 electroded unuptanium plugs. When you pull the plugs after you have already tried cranking for spark they should smell of old gas, if not put gas in the car.
To hear for the pump open the fuel door and remove the cap. With your ear by the fuel filler have a buddy turn the key on and try to crank the car, you should hear a whine or hum for the tank.