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What is causing the fuel (or oil) to leak from my Fuel Pump drain line?

April 26, 2017causing drain FUEL leak line Oil pump

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What is causing the fuel (or oil) to leak from my Fuel Pump drain line?

1 Answer

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Leakage of fuel or oil through the fuel pump overboard drian line indicates a worn or ruptured diaphragm inside the fuel pump. The fuel pump should be replaced before further flight.