I have a 2007 Mainship Pilot 34 with a Yanmar 6lya-stp 370 HP engine, about 1430 hours. In neutral at 2000 rpm, after the engine is warmed up to 175 degrees F, it puts out a lot of white smoke, it not noticeable underway. In addition, at low rpm, there is a fuel exhaust sheen in the water at neutral. The fuel filters have about 30 hours and the vacuum gauge is ok. I guess, I have a fuel delivery system problem. From what I read, the fuel injectors should not need attention, but the valves probably should have been adjusted at 1000 hours. Would you start with the valves? Thanks.
Nick
Nick
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