Engineering · Diesel — Fuel Injection
A dribbling or dripping injector nozzle (poor cut-off) typically causes:
- AA lean misfire and high air consumption
- BCarbon buildup, smoky exhaust and a burned nozzle tip✓ Correct
- CIncreased compression pressure
- DLower exhaust temperature on that cylinder
Explanation
An injector that fails to cut off cleanly lets raw fuel dribble in late; it burns poorly, carbons up, smokes, and overheats/burns the nozzle tip.
Authority: Diesel Engines (USCG engineering topic)
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