Just remove the four 10mm bolts holding down the fuel rail, unplug the harness form the injector, and pop out the injector.
I replaced the spacer, and rubber gasket, and the tip. It cost me $4. Very easy fix. No more leak.
You need a special tool from VW/Audi to pull the injector.
Here is a pictorial, Audi is similar:
http://forums.vwvortex.com/showthread.ph...
Seek the services of a professional Audi specialist. Trying to perform repairs yourself will likely cause more harm than you presently realize.
One of my injectors is leaking fuel as soon as I put the key into the first click. I am going to try to replace the o-ring from that injector, however Im not sure on how to pull it out. I have a 1997 Audi A4 2.8 12v. Does anyone know of a DIY guide for just explain the process? Is it a difficult job? Thanks.