Address Yanmar 4JH-TE excessive smoke problem. blog

Sean from Diversified Marine met me at the boat last week. The smoking issue was plain to see. His suggestion was to pull the injectors and test them which I agreed to despite having had them tested 100 hours ago.

When he pulled the injectors out, Sean noticed that they had been installed backwards. He took the injectors to bench test them and to my surprise I got an email with photos for each part of the project. He noted that one injector needed to be rebuilt. 

He then came back to the boat and prior to installing the injectors decided to do a compression test, which I was happy to hear. The yard where I had the 1000 hour service done declined my request to do a compression test. 

*** DETAILS OF RECENT WORK COMPLETED ***
- Installed new protectors and seats on injectors.
- Did compression test,

- #4. 440 
- #3. 420
- #2.  440.
- #1.  450.
- Installed injectors, changed fuel filters.
- Ran engine, checked for leaks.

Once the engine was up to operating temperature, it looks like this solved the problem. 

I'm impressed with Sean's professionalism. He was extremely patient with my questions. 

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