USCG QMED Practice Questions - USCG Qualified Member Of The Engine Department (QMED) Exam

Black exhaust smoke from a marine diesel engine most often indicates which condition?

Cooling water leaking into the cylinder Lube oil burning in the combustion chamber Incomplete combustion of fuel, often from overload or poor atomization Normal operation at idle

Correct Answer:

Incomplete combustion of fuel, often from overload or poor atomization

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