ON APRIL 1, 1985, A CESSNA 210 WITH MEXICAN REGISTRY, XBCKE,PILOTED BY A MEXICAN NATIONAL, LOST ENGINE POWER AND LANDED SHORT OF THE RUNWAY AT SALT LAKE CITY INTERNATIONAL AIRPORT THE FLIGHT HAD DEPATED THE GRAND CANYON AZ AIRPORT. POST ACCIDENT EXAMINATION OF THE AIRCRAFT REVEALED THAT 3 1/2 QTS OF FUEL WAS IN THE LEFT TANK. THE RIGHT TANK WAS 1/2 FULL NO FUEL WAS FOUND IN THE ENGINE FUEL LINES. THE PLT STATED HE FOUND THE FUEL GAUGES WERE NEVER ACCURATE. HE DID NOT REFUEL TO FILL THE ACFT PRIOR TO TAKEOFF BUT ESTIMATED 60 GALLONS OF FUEL ON BOARD THE ACFT . THE FUEL SELECTOR WAS ON THE RT TANK AFTER THE ACCIDENT. THE PLT DID NOT STATE WHEN THE SELECTOR WAS USED OR TO WHAT POSITION DURING THE FLT. ONLYTHE MAGS AND BOOST PUMPS WERE MENTIONED IN THE PLTS WRITTEN ACTIVITIES PERFORMED DURING THE INTERVAL FROM 'RECOGNIZED' LOSS OF PWR BY THE PLT TO THE LANDING SHORT OF THE RWY. NO MALFUNCTIONS OR DISCREPANCIES WERE FOUND DURING THE INVESTIGATION. THE FUEL WAS CHECKED FOR WATER OR CONTAMINENTS & NOTHING EXTRAORDINARY WAS SEEN.