If you have 0 compression, it sounds like the cam timing chain for that side has broken or jumped time. If it was driven that way, that would likely lead to interference between the pistons and valves leading to bent valves.
With the spark plugs removed, take a light and shine into the cylinder to see if there is any evidence of the tops of the pistons being hit.
Let me know.
Joe
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Wednesday, March 16th, 2022 AT 4:05 PM