fuel round injectors

Haveing problems with starting my 03 td4. Changed crank breather and found that at the base of the injectors had fuel round them. I cleaned it up and checked it the next day. And was there again. Looks like its leaking from the join where fuel pipe goes on to injector. Is there a seal that might need changing. Done leak test and there's no leak at return pipes. Plz help

it will be coming from the return pipes or the feed the feed is under pressure as you may know ,so make sure the clips are properly in place ,you have to press down a little when putting the clip on.

Old post I know, but if you're still around I love to know if you found out for sure what it was? Have the same leak. I have ordered a new set of leak off pipes with connectors and seals, although the tops of the injectors look dry.