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sheen on the water


I have Cummins 6BTA's on a 390. One engine is smoking more than the other and there appears to be fuel coming out of the exhaust port leaving a light sheen on the water. I was told it is likely unburned fuel due to one or more injectors with poor spray pattern resulting in incomplete burn. Does this sound right, or is there some other problem at play? There is more smoke coming from this engine. Cant tell if the smoke is more blue than black though.

Any comments or advice appreciated.

Joe
Pacific Horizons

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