Faults and Fixes
Why does my engine produce black smoke?
Black smoke means fuel is not burning completely: overload, a blocked air filter, a turbo problem or injector imbalance. Overload often comes from the wrong propeller pitch — the engine cannot reach its rated revs.
Why it works this way
Diagnostic reading and a cylinder balance test separate a fault in the engine from a fault in the load, which are treated very differently.
Related services
Serkan Kotel · independent yacht surveyor · IIMS · ABYC · MCA
