I knew this wasn't a good idea, and beyond my capabilities.
This isn't beyond your capabilities. Something bizarre and simple is just being overlooked, or a previous problem is now coming up. This is just as simple as changing your oil, if not simpler, I just can't figure out what happened here.
The idea mentioned before is a good one. That method would check to be sure that your fuel rail is being fed with fuel, and if not, you know that your problem is fuel filter---> pump/tank, not engine <---- Fuel filter.
Good luck figuring it out either way, let us know how it goes.
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