Question 14Motor Plants - 1st Asst/Chief
70% to passWhen inspecting pistons, liners, and rings of a large two-stroke cycle diesel engine through the cylinder ports, a wet piston crown would indicate a_______________.
Afaulty oil ring
Bleaky fuel injector
Cfaulty piston lubricator
Dbroken compression ring
AI Explanation
The correct answer is B) leaky fuel injector. A wet piston crown indicates that fuel is leaking past the fuel injector and entering the cylinder. This could be caused by a faulty or worn fuel injector. The other options are incorrect because: A) A faulty oil ring would not cause a wet piston crown, but rather poor lubrication and oil buildup. C) A faulty piston lubricator would also not lead to a wet piston crown, but rather insufficient lubrication. D) A broken compression ring would allow compression gases to escape, but would not directly result in fuel leakage and a wet piston crown.
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