Abstract: Fuel apparatus including a fuel vaporizing portion, an air conveying portion, a heating portion and a flow control portion; the fuel vaporizing portion including an enclosed chamber, the chamber including a liquid reservoir section and a vapor expansion section, the vapor expansion section including a plurality of baffles providing a tortuous path through the expansion section, a liquid fuel inlet to the chamber and a vapor outlet from the chamber, a first vapor conduit connecting the chamber outlet with a carburetor of an engine, a second vapor conduit connecting the engine carburetor with the chamber adjacent the vapor expansion section thereof; the air conveying portion including an air intake section, a divider for air flowing through the air intake section, a first duct for conveying one part of the air flow to a point adjacent the liquid reservoir section of the enclosed chamber, a second duct for conveying a second part of the air flow to the first vapor conduit; the heating portion being disposed adja