Engine Safety (Supplementary) USCG Question #908 (Set 12)

What is the best way of stopping an over speeding diesel engine?

Official USCG Answer & Rule Citation

Correct Answer: Option D — Secure the fuel supply and block the air intake

An overspeeding diesel engine cannot be controlled by fuel shutoff alone if lubricating oil is being consumed from the crankcase. Both the fuel supply and air intake must be positively blocked to starve the combustion process.

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