Is your injection pump leaking fuel? Well, the pump head seal could be your problem. This process does take some time and is tedious. You need to be very patient and take your time to get this done right. Make sure that you use a new high quality T30 torx bit to remove the screws holding the pump head on. A worn out torx bit can strip the head of the screws and can lead to a bigger problem. The four pump head torx screws get torqued to 1014 Nm (about 710 ft lbs.). This is a rather lengthy video, but I tried to cover as much as possible to help you with this repair. I wish you the best of luck and feel free to comment below.

T30 Torx Socket:
https://amzn.to/3hwotON

Bosch injection pump seal kit:
https://amzn.to/3E2ZxGu

17mm flare nut wrench:
https://amzn.to/3WZ14pK

Telescoping magnet:
https://amzn.to/3UBAFg6

Black nitrile gloves:
https://amzn.to/3G8Mg1G

24mm wrench:
https://amzn.to/3TzVebj

Diesel Geek injection pump head seal kit:
https://dieselgeek.com/collections/vw...

LiquiVac:
https://amzn.to/3DYdeX4