The pilot was cleared to land on runway 27 at Memphis International Airport. About 1-1/2 miles east of the airport the pilot reported a loss of engine power. The pilot made a forced landing in a parking lot and collided with an automobile and a fence before coming to rest. An inspection revealed that the gascolator was missing, and the required safetywire for the gascolator was not found. The last inspection of the engine was done during the annual inspection in July of 1995. The aircraft had been flown 86 hours since the annual inspection.