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When monitoring a diesel engine's condition, which parameter most directly indicates leakage past worn piston rings or a poorly seating valve?

  1. A. Elevated exhaust temperature on one cylinder
  2. Low compression pressure on a cylinderCorrect
  3. C. Increased turbocharger speed
  4. D. Rising jacket-water temperature

Why B is correct

NAVEDTRA 14075 §3-1 states that compression pressure that is low on a cylinder points to leakage past worn rings, a burned or poorly seating valve, or a scored liner. Elevated exhaust temperature on one cylinder points to an injector fault or uneven load sharing, not ring or valve leakage.

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When monitoring a diesel engine's condition, which parameter most d… — USCG Exam Practice · CaptainsGround