Have you checked your air cleaner/muffler for oil saturation? My engine has had slightly elevated blowby which caused more oil to be pushed past the separator screen in the valve cover. The oil is drawn back into the engine by intake suction during normal ops. When the engine was shut down the oil would accumulate and saturate the foam intake air cleaner. What oil didn't get soaked up would leak down the side of the engine. I don't recall how bad my startup exhaust was or wasn't but blue smoke makes me think motor oil is acculating and being burnt off. I now have a drop out can/oil collection can which allows me to separate and monitor oil blow by accumulation. I've shared it before in my videos but if you haven't seen it check out the link below.
https://youtu.be/H-GI38vE4hQ I'm also a huge fan of Opti-Lube XPD and try to add it to my tank whenever possible. I'm not sure it will help you problem but it certainly can't hurt. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Tue, Jul 3, 2018, 12:30 PM Fred Hazzard via CnC-List < cnc-list@cnc-list.com> wrote: > My 4 cyl Yanmar (non turbo) has begun to smoke a lot more when first > starting. It is a blue smoke that mostly goes away when it warms up. It > starts very easily and runs smoothly with good power. > I would love to hear your opinions of possible problems and cures. > > Fred Hazzard > S/V Fury > C&C 44 > Portland Or > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
