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Engine: Motor Plants and Auxiliary Boilers

Question 1,720 of 1,433

You suspect that a diesel generator set on your salvage tug has a defective unit injector because the engine, although warm, is running roughly. The two-stroke engine is fitted with mechanically operated unit injectors. When you push and hold down the No. 3 cylinder injector follower, there is no real change, as the engine continues to run roughly as before. What does this indicate?

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Appears on the 2026 sample exam for

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