It could be the turbo seals, wrong oil viscosity, or piston ring blow by. The crank case should have slight blow by resulting in a slight positive pressure but the only way it regulate that pressure is to send a recirc flow to the vacuum side of the intake. Positive Crankcase pressure is controlled by a PCV and works the same on naturally aspirated engines. Check the PCV or just replace. An inexpensive way to eliminate blow by as a culprit is to install an oil catch can.
Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Tue, Nov 12, 2019, 4:33 AM SEAN CONNER via CnC-List < cnc-list@cnc-list.com> wrote: > I have a new (to me) Yanmar 3JH2-TE turbo, and after running it for the > first time in a number of months, I noticed oil coming from the hose that > leads from the turbo to the air intake. Additionally, the air filter was > pretty oily. My first thought is the seals in turbo are shot.. do they > dry out if not the engine is not run (for ~18 months)? So just wanted to > see if anyone else has experience before I plan to rebuild the turbo > charger. Also think this explains the smoke (not significant, but > noticeable) when the engine was running... Thanks in advance for any > replies. > Sean Conner > C&C 34 Ladyhawke > _______________________________________________ > > 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
