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Oily substance in raw water exhaust

guydano

New member
Hello again.I have an MD11C sa

Hello again.I have an MD11C sail drive volvo engine. That has a V drive. The engine is raw water cooled. Since i put it in the water. I noticed that oil or diesal have been coming out the exhaust. the engine is not producing excessive smoke. the engine starts fine and runs good. Would you have an idea about what is causing this problem. I should add that this is only when the engine is running. the higher i throttle up the more oly substance is discharged. Thanks
 
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