Audi CAGA ruckelt und bricht komplett zusammen | Posts 16+

@Rainer, yes, it's a smoke detection flag from an original dataset.

Do you perhaps have a part number available?
I'm having the same problem, and we've been searching for months.

No, I haven't. But it only exists in conjunction with the oil feed line.

Okay, here's my feedback as well: all the issues, including the misfires, lack of power, and knocking sounds, have actually been resolved!
However, I'm adding a few more details.
The brackets on the injectors are much more fragile than expected, so caution is advised.
The injector itself has small O-rings that I would replace at the same time if you're already working on it. That's about it. Thank you very much to all of you; I had to search for a long time!