Engineering · Diesel — Troubleshooting
A diesel engine that turns on air but fails to fire could be caused by all of the following EXCEPT:
- AEmpty fuel supply or closed fuel valve
- BAir in the fuel system
- CFuel rack stuck at zero (no fuel)
- DExcessively high cetane fuel✓ Correct
Explanation
No-fuel conditions — empty tank, closed valve, air-locked lines, or a rack stuck at zero — prevent firing. High cetane fuel actually improves ignition, so it would not cause a no-start.
Authority: Diesel Engines (USCG engineering topic)
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