Problems with the diesel engine fuel injection pump are usually caused by __________.
Official USCG Answer & Rule Citation
Correct Answer: Option D — contaminated fuel
Abrasive particulate matter and water in contaminated fuel erode the micro-tolerances of plungers, barrels, and injector tips, standing as the leading cause of pump failure.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.