FAA Powerplant Written Practice Test

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Prepare for the FAA Powerplant Written Test. Study with flashcards and multiple choice questions, each featuring hints and explanations. Ace your exam with confidence!

Practice this question and more.

Before removing a fuel hose from an engine, what should be done to the solenoid operated fuel valve?

Close the solenoid fuel valves with battery power and then disconnect the battery
Leave the valve open to relieve pressure
Run the engine until fuel is depleted
Manually override the fuel valve control

The correct answer is: Close the solenoid fuel valves with battery power and then disconnect the battery

To ensure safety and prevent fuel spillage or fire hazards when removing a fuel hose from an engine, the solenoid-operated fuel valve should be closed while there is battery power. This action stops the flow of fuel from the tanks to the engine. By closing the valve, you effectively isolate the fuel system from the engine during maintenance. After the valve is closed, disconnecting the battery serves as an additional safety measure to ensure that the solenoid cannot be activated inadvertently while working on the fuel system. This procedure is crucial as it helps maintain control over the fuel system and minimizes the risk of accidental ignition or fuel leaks that could occur if the valve were left open or the battery remained connected.