SAMSA Marine Engineer Officer Class 4 CoC Exam Practice Questions - SAMSA Marine Engineer Officer Class 4 CoC (Near-Coastal & Port Operations) Exam (South Africa) Exam

Continuous black smoke emitted from the exhaust of a marine diesel engine running under load indicates:

Water entering the combustion chamber from a head gasket leak Lube oil burning due to worn scraper rings Excess air in the cylinders causing lean combustion Incomplete combustion caused by unburnt carbon particles (fuel overload or restricted air intake)

Correct Answer:

Incomplete combustion caused by unburnt carbon particles (fuel overload or restricted air intake)

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