During a false start, what is the correct sequence of actions to purge fuel and attempt a restart?

During a false start, what is the correct sequence of actions to purge fuel and attempt a restart?

• A. Cycle the engine ignition to ON, then move the thrust lever to IDLE.
• B. Shut down all electrical power and hold the throttle at MAX.
• C. Move the thrust lever to CUTOFF, move the ignition switch to OFF, motor the engine for 15 seconds to purge fuel, then press the engine start disengage button.
• D. Move thrust lever to CUTOFF, then immediately press engine start disengage button.

Answer: (C)

After a false start, you must clear any unburned fuel from the engine and then attempt a fresh start. The correct sequence is to place the thrust lever in CUTOFF to stop fuel flow, switch the ignition OFF to prevent any ignition attempt during purge, motor the engine for about 15 seconds to purge residual fuel, and then press the engine start disengage button to restart. This order ensures the engine isn’t fed with fuel while ignition is off, and the starter motoring clears the fuel from the combustion chamber and lines before attempting a normal start. Why the other approaches don’t fit: simply cycling ignition or leaving the throttle at idle doesn’t purge fuel and can lead to an unsafe restart. Shutting off all electrical power and holding the throttle at MAX introduces unnecessary disconnection and improper control of the engine systems. Moving to CUTOFF and starting immediately bypasses the purge step, risking ignition of residual fuel.

After a false start, you must clear any unburned fuel from the engine and then attempt a fresh start. The correct sequence is to place the thrust lever in CUTOFF to stop fuel flow, switch the ignition OFF to prevent any ignition attempt during purge, motor the engine for about 15 seconds to purge residual fuel, and then press the engine start disengage button to restart. This order ensures the engine isn’t fed with fuel while ignition is off, and the starter motoring clears the fuel from the combustion chamber and lines before attempting a normal start.

Why the other approaches don’t fit: simply cycling ignition or leaving the throttle at idle doesn’t purge fuel and can lead to an unsafe restart. Shutting off all electrical power and holding the throttle at MAX introduces unnecessary disconnection and improper control of the engine systems. Moving to CUTOFF and starting immediately bypasses the purge step, risking ignition of residual fuel.