Regarding the fuel injector shown in the illustration, the purpose of piece #38 is to __________. Illustration MO-0059
Official USCG Answer & Rule Citation
Correct Answer: Option A — filter the fuel
Item #38 positioned within the fuel injector assembly acts as an internal edge-type or sintered metal filter, capturing any microscopic particulate matter just prior to the high-pressure fuel entering the nozzle valve seat and spray orifices.
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