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"Yanmar 6LYA-STP - Oil in exhaust

bulit7

Contributing Member
There is oil (or fuel) in the exhaust. I replaced the risers and both engines show oil in the turbo housing.
I removed the turbos on both engines and they show oil leaking down the exhaust manifold exit port.

The engines are from 2003 and have 535 hours on them.

Not sure where the oil is coming from. Any ideas?
 
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