There was a pic on one of the Forums of a Prchamber that had a hole cut into it from an Injector that was spraying to the side.

Someone had the Prechamber Ball Pin come loose and go to the bottom of the Prechamber and the tip of the Prechamber blew off of and the when the Piston came up they were trapped between the Cylinder Head and the Piston Head; damage resulted.

Use your best judgement.

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84 300D, 82 Volvo 244Gl Diesel