This sounds like two thing have happened. First the oil pressure dropped either due to an oil pump failure or it just ran dry of oil and cause the rattle. This rattle was most likely an engine noise due to a lack of oil. Then the engine seized and broken the timing belt. Now you are trying to start the engine and it doesn't start because the crankshaft is the only thing spinning.
Here are some guides that will help with this but we can start to confirm this with a compression test. I suspect you will have little or no compression on the cylinders.
https://www.2carpros.com/articles/how-to-test-engine-compression
https://www.2carpros.com/articles/serpentine-belt-timing-belt-timing-chain-diagrams
Below you will find the info from the manual on how to check and replace the belt if you have no compression.
Please run through this and let us know if y9ou have a question. Thanks
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Sep 10, 2021 at 7:07 AM
