AFTER TAKEOFF FM THE ARPT THE PLT STATED THE ACFT ENG RAN ROUGH AND HE APPLIED CARB HEAT TO HELP THE ENGINE RUN BETTER AFTER APPLICATION OF CARB HEAT THE ENGINE QUIT. THE PLT MADE A FORCED LANDING BACK TO THE AIRPORT FINALLY TOUCHING DOWN ON A TAXIWAY BETWEEN TWO HANGARS. AFTER TOUCHING DOWN THE PLT STATED THE ACFT ENG RESPONDED MOMENTARILY WITH THE ACFT BECOMING AIRBORNE. THE ENG QUIT AFTER THE ACFT BECAME AIRBORNE AND THE PLT STATED HE HAD INSUFFICIENT SPEED WITH WHICH TO CLEAR HANGARS AT THE END OF THE TAXIWAY. THE ACFT DESCENDED BACK TO THE TAXIWAY AND STRUCK ACFT PARKED IN THE HANGAR. A SUBSEQUENT ENGINE RUN FAILED TO DISCLOSE ANY MECHANICAL DIFFICULTY. A FURTHER CHK FOR FUEL LEAKAGE OR CONTAMINATES WAS UNSUCCESSFUL. CARBURETOR ICING PROBABILITY CHARTS SHOW THAT ICING IS LIKELY AT THE TEMP & DEW POINT RECORDED ON THAT DAY. THE PLT STATED HE RAN THE ENG FOR A PERIOD OF 15 TO 20 MINUTES.