I've got a 96 Jetta, TDI. The gasket is leaking around the injector pump head but there is a triangular shaped security bolt (on the left front corner of the head of the injector pump) that defies coming loose.
I purchased a set of gaskets, seals and 0-rings that came with the "adapter" tool for removing it but it was made of soft metal and stripped out at the first go. Inquiries to the seller about a replacement or where I can buy a real adapter or socket have gone unanswered... I've yet to find it on the internet, but then not knowing what to call it is a bit of a hinderance...
rnc