Well, making progress at least. The pump was absolutely filthy and covered in a layer of who knows what. After a thorough cleaning, its now clicking with current, but it's not phsically pumping any fuel. From what I read it needs quite a lot of clicks to pump a ml of fuel.
I note that the spring and bearing are quite corroded, ordered a new one, but anyone have any other ideas what might be a reason the pump is clicking but not pushing fuel through? Would rather not spend 60quid on a new pump if I can avoid it, until I'm sure the rest is working.
Cheers,
Matt.