USCG Exam PracticeMaintenance, machine tools, drawings, and tables
When monitoring a diesel engine's condition, which parameter, if found lower than normal on a single cylinder, most directly indicates leakage past worn piston rings, a burned valve, or a scored liner?
- A. Exhaust temperature
- ✓ Compression pressureCorrect
- C. Turbocharger speed
- D. 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. The other parameters are condition indicators but do not directly isolate those specific failure modes.
Cited:NAVEDTRA 14075 §3-1