Any idea what this is?

[calibay]

Just got myself a late bay, 2.0 fuel injected type 4 engine. Taking out the fuel injection system as it has a leak but I noticed this plastic knob which looked to be screwed or bolted through to the fly wheel. Also looks like a wire went to it at some point.

Any ideas?

http://www.thesamba.com/vw/forum/album_search.php?search_author=calibay

[SGKent]

did you damage the wire?

If you did, the VW dealer analyzer from the late 1970's won't be able to tell timing anymore. That is if you can find a dealer who still has the equipment.

[calibay]

That's great thanks for the information. Does the engine need it for running? I.e the ecu doesn't use it for fueling?