You might try dry ice on the injector to cool it down after heating the head in the area.
These threads make me so happy I don't live where rust and corrosion are prevalent.
Thanks for all the help everyone
I now have the offending injector out of the hole..with success (it appears)
I could not see any visible cracking
But it took me couple off hours off and on, of patient back n forth working slooooowly..with tons of penatrant
I hope everything is ok...
There is tons of carbon in the hole to be cleaned out yet
YAHOOO !!! Good news.
Just curious, why did you remove the injectors in the first place ? :-)
Is it typical to have so much trouble in removing these vw diesel injector? Is there a difference in injectors for a 1.6NA and a 1.6TD motor?
Yep, they get stuck in there good. Oil leaking around the injector threads will do it, as will escaping combustion gasses. Either way you get carbon buildup that seizes the injector(s) in place.
Turbo injectors "pop" at a higher pressure than NA injectors. The higher the pop pressure the more time they will take to pop, and the more advanced the pump needs to be to compensate. If you put turbo injectors on an NA and try and use the NA timing spec it won't be right, likewise if you go the other way.
YAHOOO !!! Good news.
Just curious, why did you remove the injectors in the first place ? :-)
I wanted to do a compression test...and I knew that I wanted to see inside the cylinder ..even just a wee peek..
That and I had never even seen what an injector looked like...
nooooooobie 4 sure