edgedesant

i have owned my 2011 A8 sense 2012 .. the car now has 98K SOOOO we had to do a lot of work
Upper control arms, Lower control arms, front and rear pads and rotors, carbon cleaning ... so here is where the problem has started THE CEL is on Bank 4 and 8 Fuel injectors are causing a fault ....
SO now i have to purchase injectors has anyone found a good source New or Used .... a set of 8 will be 800-900 dollars.

a8 abadi

Do you know the part number?

MP4.2+6.0

Not sure I follow, besides wanting source for injectors. What is the fault more specifically? Are you sure it is the injectors? (I don't think of VCDS being able to narrow it down like that). Also "Bank 4 and 8" isn't a term that seems to fit. Do you mean cylinders 4 and 8? A bank for Audi is a set of cylinders controlled with the same O2 sensor for ignition and fuel purposes, which for a V8 means two banks and reflects the two sides of the motor. Asking just to make sure you are sure of diagnosis before spending a bunch of $$$. On the injectors, I assume you have tried normal easy cleaning approaches like Techron and such?

FWIW, the best way to get to to a better price on the injectors in my experience to to track down the actual Bosch part # for them--not the Audi one, but the separate Bosch one. Then look for the injectors using that part #. Would get a better quality product than third party stuff, if those can even be found for the 4.2.

NotoriousGLU

@edgedesant the part number is 079906036AC for new injectors. I think the best price would be @ genuineaudiparts.com. Also, if you can check the HPFP output. I was always under impression that the injectors last longer on TFSI or FSI engines.