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2011 LGH knock at #6 cyl - Wrist pin??

Discussion in '6.6L Duramax Diesel' started by nbkhwjm, Apr 19, 2021.

  1. nbkhwjm

    nbkhwjm Registered User

    Likes Received:
    Jun 3, 2019
    Birmingham, AL
    Hey all bought this truck used a couple years ago it had 250k on it. I have no idea how it was treated before me. Been running strong it now has 290k on it.

    Did a Def delete and programmed chip. Other than that I've not had to do anything other than routine maintenance.

    I heard a very light click sound so went home there was a slight knock..the next morning it was louder, enough for me to shut it down and have a tow truck take it to the local diesel guy.

    He looked at it and said he checked the injectors, did other tests (don't know what) and said it was a #6 wrist pin...

    When I use an engine stethoscope the knock is very loud over the #6 cyl.

    The engine isn't missing or anything. Has the same power and doesn't smoke more than usual. There are no codes showing on the OBD.

    So before I snatch this engine out, is there anything else I can check to further narrow or confirm this? Other ideas on what it could be?

    Thanks for all the help...


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