When inspecting pistons, liners, and rings of a large two-stroke/cycle diesel engine through the cylinder ports, a wet piston crown would indicate a __________.

Correct Answer: Option B — leaky fuel injector

A wet piston crown observed through scavenge ports indicates unburned liquid fuel accumulating on the piston top, characteristic of a dripping or leaky fuel injector that continues to dribble fuel after the injection event concludes.