Reply To: 1956 Johnson CD-13A

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September 25, 2025 at 11:22 am #300145
Aidan Smith
Participant

    US Member

    Fleetwin,

    Honestly, it is difficult to tell why it seized up.

    The piston, rod, and other internals are shattered into many small pieces.

    The bore looks just fine, and the other piston turns just fine, but compression seems OK too.

    The engine is currently back together as I had to take on another project, and needed the space.

    Any ideas of what do to next in diagnosing the failure?

     

    Thanks

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