The airplane sustained substantial damage during a forced landing onto a road at about 1730 Pacific time. The commercial pilot and the pilot-rated passenger were not injured. Visual conditions prevailed. The pilot reported visually checking fuel quantity and determining he had enough fuel to make the cross-country flight and return. On the return leg, the engine sputtered; the pilot switched to the other fuel tank and the engine ran normally for a short time, then lost power. On-scene examination revealed the airplane was equipped with an exhaust system placarded “fuel flow/use may be higher than normal…”
