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  1. m16ty

    NHC250 foreign object in cylinder.

    I had a similar thing happen on a 24 valve Dodge Cummins. The piston oil squirter broke off on #6 piston. Melted that piston in short order. I know the 250 doesn't have piston sqirters but I fully understand what happens when a piston looses lube and cooling oil.
  2. m16ty

    NHC250 foreign object in cylinder.

    Lean condition doesn't cause problems in a diesel like it does in a gas engine. If a diesel leans out it just won't fire. The main thing that causes a melted piston in a diesel is leaking injectors dumping too much fuel.
  3. m16ty

    NHC250 foreign object in cylinder.

    I wonder if the injector on that cylinder was messed up and caused that cylinder to overheat instead of a foreign object?
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