alex_a4b6q

Hi there I have a 04 B6 A4 Quattro.
I’ve been having the issue for about a week. Upon cold start my engine misfires and the car shakes for about 6 seconds then after it clears up and idles down, air injection pump goes off and off I go. My mechanic says that I need to replace my fuel injectors since they don’t hold too much pressure causing fuel to leak Into the cylinders. How easy would it be to replace them, it’s seems easy. This video I attached shows it running fine! Btw I replaced the coils and spark plugs with Bosch parts.