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Multiple Choice

If a fuel oil centrifuge fails to remove water and solids, what is the most likely consequence?

Removing water and solids from fuel is essential to protect the high‑pressure fuel system. When the centrifuge fails to do that, dirty fuel carries water and abrasive particles into the injectors and pump. Water in the fuel can cause corrosion, emulsions that undermine lubrication, and deposits that promote cavitation and wear in pumps and nozzles. Solids clog passages and nozzle orifices, leading to injector fouling and uneven spray. All of this translates directly into increased wear and shorter component life. Because the contaminants reach the injectors, they’re the most likely to suffer, making injector fouling and increased wear the best answer. The other options aren’t accurate: cleaner fuel wouldn’t occur without the contaminants being removed, fuel can still combust though poorly, and injector timing doesn’t improve automatically from fuel cleanliness.

Removing water and solids from fuel is essential to protect the high‑pressure fuel system. When the centrifuge fails to do that, dirty fuel carries water and abrasive particles into the injectors and pump. Water in the fuel can cause corrosion, emulsions that undermine lubrication, and deposits that promote cavitation and wear in pumps and nozzles. Solids clog passages and nozzle orifices, leading to injector fouling and uneven spray. All of this translates directly into increased wear and shorter component life. Because the contaminants reach the injectors, they’re the most likely to suffer, making injector fouling and increased wear the best answer. The other options aren’t accurate: cleaner fuel wouldn’t occur without the contaminants being removed, fuel can still combust though poorly, and injector timing doesn’t improve automatically from fuel cleanliness.