During the start sequence, you must turn on which switches to supply fuel to the engines?

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Multiple Choice

During the start sequence, you must turn on which switches to supply fuel to the engines?

Explanation:
Priming the fuel system before start is essential to purge air from the lines and ensure fuel actually reaches the engine’s fuel control and injectors. The prime pump delivers a low-pressure, high-volume flow that pushes fuel through the lines, fills the feed to the main pump and fuel control, and bleeds out trapped air. Once the lines are primed, the start sequence can proceed and ignition can occur. After startup, the boost pump typically takes over to maintain pressure during normal operation, while the main fuel valve controls the flow to the engine.

Priming the fuel system before start is essential to purge air from the lines and ensure fuel actually reaches the engine’s fuel control and injectors. The prime pump delivers a low-pressure, high-volume flow that pushes fuel through the lines, fills the feed to the main pump and fuel control, and bleeds out trapped air. Once the lines are primed, the start sequence can proceed and ignition can occur. After startup, the boost pump typically takes over to maintain pressure during normal operation, while the main fuel valve controls the flow to the engine.

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