Re: Yanmar 2GMF fuel sheen from exhaust.
Does the sheen go away once the engine warms up? I've very occasionally noticed a very slight sheen from the exhaust of my boat's 2GM20 (RWC) when I first start it. But it goes away once the engine warms up. As far as I can tell it's just a little unburned fuel in the exhaust of the cold engine.
Never forget them. Do something to prevent it from happening again.
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Last edited by SlowButSteady; 05-15-2012 at 04:32 PM.