At this point, I listened very closely to your original recording. Not being there makes it easy to make a mistake. But I'm hearing an engine with no compression. I really feel that either the timing belt has broken, or it jumped time.
What I recommend is to do a compression test. It's possible that oil got on the belt and caused an issue. I would like to have a better recording to confirm, but I understand why at this time you can't get one.
Do me a favor. Perform a compression test on the engine. You will need a compression gauge, but most parts stores will lend you one free of charge. Also, here is a link that shows how to perform the test:
I attached info from the manual specific to this vehicle for testing. It includes the minimum pressure specs. It does say to run the engine until warm, but we can't do that in this case.
Let me know what you find. Also, I'm not trying to pull you away from what you are checking. What you mentioned makes good sense. However, to a trained ear, the timing sounds like the problem. (I could be wrong. I've been wrong before and will be again at some point) LOL But this is what I believe is the problem. The compression test will confirm it for me.
Thursday, October 14th, 2021 AT 6:14 PM