Abstract: An apparatus for purifying fuel, comprising a closed container having a top, a bottom, an inlet for impure fuel and an outlet for purified fuel placed at a level over the inlet, both coupled near the top of the container, a heating bulb to heat the impure fuel and allow the settlement of impurities and a valve in the bottom to remove the impurities from the container; a partition wall coupled in the container above the inlet and under the outlet, and a hollow body dependently coupled to the partition wall, defining a surrounding chamber under the partition wall to receive the impure fuel to the bottom of the container, an inner chamber in the hollow body under the partition wall, for purifying fuel, and an upper chamber over the partition wall for purified fuel; and a passage in the partition wall communicating said inner and upper chambers, to allow passage of the purified fuel to the upper chamber.