If the engine does not light off within 10 seconds during start, which action should be taken?

If the engine does not light off within 10 seconds during start, which action should be taken?

• A. Place thrust lever in cutoff, motor engine for 15 secs, then press start disengage button
• B. Move thrust lever to idle, then press start
• C. Reset the master switch and retry
• D. Inspect fuel supply and retry

Answer: (A)

When the engine doesn’t light off within 10 seconds, the procedure is to abort the start by cutting off fuel and using the starter to purge and cool before trying again. Placing the thrust lever in cutoff stops fuel flow, which prevents a prolonged unburned-fuel condition in the combustion chamber. Motoring the engine for 15 seconds uses the starter to rotate the engine, clearing fuel and stopping any over-fueling or hot-start risk, and then you press the start disengage button to reset the start system and attempt another light-off. This sequence is preferred because it safely clears a hung or wet start and protects the engine and starter from damage due to a prolonged start attempt. Moving the lever to idle or simply resetting the master switch doesn’t provide the necessary fuel cut and starter purge. Inspecting fuel supply might be wise if failures persist, but the immediate action during a no-light-off start is to abort with cutoff, motor, and reset the start.

When the engine doesn’t light off within 10 seconds, the procedure is to abort the start by cutting off fuel and using the starter to purge and cool before trying again. Placing the thrust lever in cutoff stops fuel flow, which prevents a prolonged unburned-fuel condition in the combustion chamber. Motoring the engine for 15 seconds uses the starter to rotate the engine, clearing fuel and stopping any over-fueling or hot-start risk, and then you press the start disengage button to reset the start system and attempt another light-off.

This sequence is preferred because it safely clears a hung or wet start and protects the engine and starter from damage due to a prolonged start attempt. Moving the lever to idle or simply resetting the master switch doesn’t provide the necessary fuel cut and starter purge. Inspecting fuel supply might be wise if failures persist, but the immediate action during a no-light-off start is to abort with cutoff, motor, and reset the start.