Hello all -
I have a 2006 Yanmar
4JH4 / SD 50 setup on my catamaran
(two of course
and have a few questions.
1. There is a shudder in the drivetrain system somewhere. We have 1,100 hours on our engines and have felt like it is becoming a little worse than when we bought the bought with 800 hours on the engines. What would be your troubleshooting chart?
2. When I run the engines for a long time I can see tiny bubbles in the oil
. I know about the dipstick problem and have the oil
at the correct level.... but it is just weird - the port engine
gets all the little bubbles - and of course the actual volume expands some. Any ideas?