Question 1074 Deck Safety

70% to pass

How should you warm up a diesel engine that has not been run for some time?

A Idle for a brief period of time and then warm up at half speed.
B Inject ether into the air intake to shorten warm up time.
C Bring it up to top speed immediately and run until warmed up.
D Run it at minimum speed until warmed to operating temperature.
AI Explanation

The correct answer is A) Idle for a brief period of time and then warm up at half speed. This is the correct approach because diesel engines require a gradual warm-up to avoid damage. Idling the engine briefly allows oil to circulate and reach the engine components before gradually increasing the speed to half. This gradual warm-up helps prevent thermal shock and ensures the engine reaches optimal operating temperature safely. The other options are incorrect - B) using ether can damage the engine, C) bringing it to top speed immediately is too sudden, and D) running at minimum speed indefinitely does not properly warm up the engine.

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