Hi Jon,
Could you let me know what code or codes you found? Also, is the check engine light ever flashing when driving it?
Let me know. Also, let me know if you noticed any smoke (gray or black) from the exhaust, if you notice any odors from the exhaust, and if you have checked the fuel pressure. If you haven't checked fuel pressure.
here is a link that explains how in general it is done:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
I will watch for your reply.
Joe
PS: Let me know if you have a VAG scan tool that can provide live data.
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Thursday, January 19th, 2023 AT 7:47 PM