Hi
Has anyone any experience of tightening the above ?
Haynes gives 12NM first followed by 270 degrees and I am advised to use new bolts. My engine code is ATJ
My garage tell me that they are worried tighteing by this anmount and have sheared the injector clamp bolts on a previous VW.

But as I had an injector come loose I want to make sure it is right this time.

Any experiences - good or bad would be appreciated