Join Date: Jun 2011
Location: Andaman Sea
Thanked 71 Times in 68 Posts
Rep Power: 5
Re: what kind of headwind should a sailboat be able to motor through?
Some of that black smoke may be the built up carbon getting burned up and blown out at higher rpms and hotter running temperature as well as unused fuel. Not sure about the drop in RPM after.
You don't mention the sea state or if your running against the tide, all will impede your progress.
Hows the service history for your engine? Fresh fuel filters, oil filter, oil change, valves adjusted, Exhaust hose checked for blockage? Diesel fuel clean? Tank condition? All stuff that may affect your engine running condition, especially under load. How about your hull bottom and prop condition?
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