Abstract: Apparatus and method for recovering fuel from the induction system of an internal combustion engine having a carburetor, comprising one or a plurality of collectors along the fuel path between the carburetor throttle valve and the inlet valves of the engine, the collectors being in the form of annular recesses in the walls of the ducts, which recesses act to trap fuel which flows back as a liquid condensed onto the inlet manifold pipes as a reaction to the closure of the associated inlet valve of the engine. Each collector is connected by a drainage systems of conduits via expansion tanks and a pump, to the petrol tank of the engine and/or to the inlet to the carburetor whereby fuel which condenses prior to being drawn into the engine can be recycled for vaporization thereby avoiding its entry into the engine as a liquid.