The boiling point should raise 1 degree C per 1 pka irrespective of atmospheric pka. With the boiling point being 100C at 1 pka(atmospheric) There is not not much to gain with an expected 2 or 3 pka difference between a properly working mechanical pump and a well adjusted electric pump. :rolleyes: You would quickly run up against the limitations of your float switch before you would defeat the boiling. Better to just keep the fuel cool.