[Vwdiesel] injector leaks

[Pam & Doug Boes]

I just put my head back on and got the Caddy started. I noticed that the #2
injector was bubbling at the injector to head interface. After running
awhile to build up some heat and move the coolant, the leak stopped. Is this
the kind of thing that will stay sealed or will it always leak when the
engine is cold? Can I stop it by retorquing the injector or will I need to
remove it and reinstall it (maybe with some thread sealer)?