The DeLorean gas tank is located underneath the spare wheel in the luggage compartment up front. Once you remove the carpet and the spare wheel you have to remove a piece of the fiber glass body in order to get to the gas tank. The piece, or cover, is held down by Philip’s screws in threads riveted into the fiberglass. The steel screws often get stuck in the aluminum threads, and the threads just spin in the fiberglass preventing the screws to be loosened. One way is to simply grind the screws down or try to cut or drill them out. But there is actually also room to hold the rivets down with a pair of needle nose pliers and with some spray-on lubricant manage to get the screws undone.