Problem with the engine, no idea!!

[MA70-3.0GT]

I don't know how you came to any conclusion from that bill, the sound quality isn't the best. It might be better if you record another one with the mic. not as close to the engine bay.

Obviously after you check the oil & coolant levels, which as bill says, is the first priority, it would be worth removing the upper timing belt cover & checking that the belt is not loose or damaged before running the engine again. If that checks out OK then see what sort of oil pressure you have at idle & see if you can get a better sound recording at the same time.

From the current recording all I can say is there does seem to be a manifold to head leak sort of sound, and obviously that the engine is still starting & running which is good news as you can't have bent all the valves. Can't say much more till I hear more, but it would also be worth pulling any fault codes & doing a compression test while you're under there.

One problem I had with my 3.0 turbo was when the intake pipe came loose from the turbo, resulting in un-metered air getting into the intake. This made the car run very lean & resulted in the engine dying on anything but the lightest touch of the accelerator & lots of backfiring. This did throw a code though, 31 IIRC.

Best of luck & hope it's something simple & cheap to sort...