Hi Fred Our 3 cyl yanmar had all three injectors rebuilt 20 months ago. The engine would puff out a cloud of black smoke when starting and then run fine with no smoke after that. This was the case before rebuilding the injectors and is still the case after the rebuild. When I asked our local expert about it he called it “Old Yanmar” and said it was fine.
My understanding is that BLACK smoke is unburnt fuel. Our engine usually catches on 2 cylinders before the third. Am guessing that perhaps I may be losing a bit of the fuel before third cylinder while engine is off for a long time. By the time all three cylinders getting fuel the one that had it first probably had extra fuel and therefore the black smoke. Of course this is only a guess …. Not sure what BLUE smoke with relation to diesels Mike Persistence Halifax, NS From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Fred Hazzard via CnC-List Sent: Tuesday, July 03, 2018 1:29 PM To: cnc-list@cnc-list.com Cc: Fred Hazzard Subject: Stus-List Diesel injectors 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
