Injector return pipes

[kneale]

Hi all, thanks for having me. I'm getting desperate!

I have an ongoing issue with leakage from my injector return pipes. I purchased some cheaper ones, and had leaks, so bought some bosch ones. 10 days and it has started leaking again. Is it the injector that'satfault? 2012 A6 avant c7 3L v6. As you look at the engine, it's the far one, on the right. 

[Steve Q]

Where abouts is it leaking from? 

Leaking injector seals are common. 

[kneale]

Hi Steve, got 2 issues, thanks for responding. Firstly blew the front, offside injector out, bent the injector pipe and smashed the return rail. Ripped the threads from the head. Have replaced the injector pipe, and sorting the injector, hopefully! Secondly, even after 2 new injector return rails, one cheap, then a bosch,  still don't seem to be able to cure the leak on the rear, nearside injector. Any ideas will be gratefully received. Thanks, Kneale 

[Steve Q]

,you're welcome. Never heard of that before. Has the engine pressure been checked? Is it over fueling etc?

[kneale]

Thanks for the response, excuse my ignorance, how would I check that