Engine Safety (Supplementary) USCG Question #827 (Set 11)

The indicated position of the fuel injection pump plunger as shown in the illustration, will provide fuel delivery to the diesel engine in an amount approximately equal to __________. Illustration MO-0061

USCG Exam Illustration MO-0061
USCG Examination Diagram: Illustration MO-0061
Official USCG Answer & Rule Citation

Correct Answer: Option B — maximum fuel flow

Rotating the plunger to align the vertical slot or helix with the suction port at maximum effective stroke prevents spillage, routing the full displacement of fuel up through the delivery valve to the injector, thereby yielding maximum fuel delivery to the cylinder.

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