Event Overview
An agricultural flight encountered a total loss of engine power after the pilot performed fuel balancing maneuvers. The pilot reported that prior to the incident, the right fuel tank indicated under 1/8 full, while the left fuel tank showed 1/4 full. To balance the fuel levels, the pilot opened the overflow valve and slipped the airplane. This procedure was performed twice, after which both fuel gauges indicated 1/8 full.
Power Loss and Attempted Restart
Following the balancing, fuel pressure was lost and the engine lost all power. The pilot attempted to regain fuel pressure using the wobble pump, but was unable to restart the engine. The pilot did not jettison the chemical load after the power loss.
Post-Incident Actions
The airplane was moved and disassembled by the owner before the fuel tanks could be inspected. According to the owner, the airplane manufacturer stated that fuel feed problems could be caused by an air leak in the cover plates on the fuel tanks. No further details about the cause of the incident were provided in the source.