There may be a few more steps that people can suggest to confirm a slipped sleeve, or other "catastrophic" failure. I would do these first before going to a shop, especially if that shop is a dealership. There have been many stories of a shop charging large fees to diagnose to a seemingly simply conclusion, your engine is toast. The story usually continues that the diagnostic fee can be applied to a 'fix.' Problem is the 'fix' is often not advisable and/or at the correct facility for the right 'fix." I would avoid that trap if at all possible. If your engine is toast, better you save the diagnostic fee and have better control of your next step.
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