Preflight and Takeoff
The pilot completed an extensive preflight inspection that included draining both fuel sumps. No sediment or water was found in the fuel. Following the preflight, the airplane was taxied to the run-up area adjacent to runway 15. The pre-departure run-up was reported as normal, and the power application for takeoff was also normal.
Engine Power Loss During Climb
As the airplane climbed through 400 feet, the pilot reported that the engine hesitated and lost power. The pilot attempted to restore full engine power by adjusting the throttle, which resulted in an engine backfire.
Forced Landing
The pilot elected to attempt a forced landing on the remaining runway. The airplane touched down on the runway and subsequently rolled off the departure end of runway 15 into a grassy area. As the airplane came to a stop in the rough grassy area, it nosed over.
Post-Accident Examination
During the examination of the airplane, both fuel tanks were drained of remaining fuel. Several ounces of water were recovered from the left fuel tank during this process. Examination of the airframe and subsystems did not disclose any mechanical problems.