Audi A6 inj noise

[orphan Shelby]

Got an 05 Audi A6 with engine noise. To me it sounds like normal direct injection noise. Customer thinks otherwise. By chance anyone have one i can listen to to make sure they sound equally loud? Noise goes along with pulses i feel in fuel line at front of left head. Heard carbon build up can also give noise issues. Any hot tips besides Seafoam?

[hotrod66stang]

texasaudigroup.com/forums

You may get more help over there, although there are a few Audi owners here.

[NoClassic]

Have a look at the timing chain guides and tensioners. What is the mileage?