Abstract: A system for feeding gasoline fuel into a gasoline burning internal combustion engine is disclosed herein along with its method of operation. In accordance with this system and method, gasoline fuel in a liquid state is supplied to a vaporization chamber where it is vaporized and thereafter directed to the engine for combustion therein. In order to prevent this vaporized fuel from condensing back to a liquid, a supply of air is preheated to a controlled predetermined temperature and directed into the vaporization chamber where it combines with the vaporized fuel and is passed with the latter to the engine.