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Old 06-28-2018, 01:31 PM
Ron Mazza Ron Mazza is offline
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Dirty Exhaust Water

I have a 1978 Viking 34 with its original Atomic 4. I sail in Toronto. I had the carborator cleaned and installed a new fuel pump this past winter. It starts well, idels smoothly, and runs like a clock. Except, when I started it yesterday evening before our weekly race it spit out a whole lot of black crap that floated on the water in an increasing arc around the back end of the boat. And while it runs, the exhaust water is slightly dark and contains an oily film. It doesn't generate a lot of smoke. Just this black film in the water.

What's going on?
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