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Diesel Engine revision module 7 of 8

FLT

Diesel Troubleshooting

No start, starts then stops, overheating, smoke colours, vibration, alarms, and decision trees.

no startoverheating

4 guided lessons · 8 practice questions · 8 flashcards

3 outcomes · self-guided revision
  • Explain no start, starts then stops, overheating, smoke colours, vibration, alarms, and decision trees.
  • Apply no start to a realistic onboard situation.
  • Recall the core check: identify the symptom precisely.

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Lesson routeTroubleshooting Method0/1 read

Lesson 1 of 1

Troubleshooting Method

Troubleshooting is a sequence, not a guessing game. Start with the symptom, ask what changed, check the simple safe items, then work through fuel, air, cooling, lubrication, electrics, and load.

Stop if continuing could cause damage. A running engine is not automatically a safe engine.

  • Identify the symptom precisely.
  • Check recent work or changes.
  • Start with simple external checks.
  • Do not change multiple things at once unless safety demands it.
SymptomLikely areasFirst skipper checks
No responseBattery, isolator, switch, starter circuitPower, neutral, stop control, terminals, fuses
Cranks no startFuel, air, stop control, compressionFuel valve, filters, bleed, cranking speed
OverheatsCooling, load, belt, coolantExhaust water, seacock, strainer, coolant, belt
Loses powerFuel starvation, air, prop load, overheatingFilters, separator, tank, air intake, prop fouling
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