What Does The Fuel Heater Do
The HHO Fuel Heater is another item in the Water4Gas guides that I have not actually tried myself yet so I really don’t know if it makes a difference. The theory is that pre-heating your fuel will cause it to combust more completely and make your fuel system more efficient.
Fuel heaters are used on some diesels and aircraft because of the nature of the fuel they run. Diesels and jet engines run a kerosene based fuel that just does not want to burn if it is too cold so it does make a difference here. If it matters with gasoline or not though I am not sure.
These fuel heaters are supposed to be attached to your upper radiator hose and then covered with tin foil allowing the heat from your radiator to also heat you fuel.