Was the timing belt replaced @ 100K miles? Who did the replacement? Could a timing belt problem cause this>

If the piston mashed the injector tip and the valves/rockers are not bent/broken, then its NOT a timing
belt problem.

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U.S. Army Retired

I think it would be best when tearing it apart to check timing belt to see if it somehow got out of time. Then pull the head and see if anything broke on the upper end first. Then bottom end if piston is loose.

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