1. A vapor fuel carburetion system for an internal combustion engine having a compression chamber and a fuel reservoir, said system comprising VAPORIZING MEANS FOR VAPORIZING THE FUEL IN THE FUEL RESERVOIR, THE VAPORIZING MEANS COMPRISING ELECTRICAL HEATING MEANS; DIRECTING MEANS FOR DIRECTING AIR AND VAPORIZED FUEL TO THE COMPRESSION CHAMBER, THE ENGINE HAVING A VENTURI TUBE SUPPLYING THE VAPORIZED FUEL TO THE COMPRESSION CHAMBER AND A BUTTERFLY VALVE IN THE VENTURI TUBE FOR CONTROLLING THE FLOW OF VAPORIZED FUEL AND AIR TO THE COMPRESSION CHAMBER; WATER COOLING MEANS HAVING WATER CONDUCTING MEANS FOR DIRECTING WATER TO THE AREA OF THE FUEL RESERVOIR TO COOL THE FUEL; FLOW CONTROL MEANS IN THE WATER CONDUCTING MEANS FOR CONTROLLING THE FLOW OF WATER THERETHROUGH; AND TEMPERATURE SENSING MEANS IN THE FUEL RESERVOIR AND CONNECTED TO THE FLOW CONTROL MEANS FOR CONTROLLING THE FLOW OF WATER IN THE WATER CONDUCTING MEANS.