I did think the fuel filter could be blocked but I tried without it at one point and it still didn't suck up any petrol or stop pumping(clicking) when it got to pressure or met any resistance like its supposed to. You would think a blockage would cause a pressure build up and cause the pump to cut out?
Anyway this morning while I waited for my car to get warm enough for the doors to open, and the hand brake to defrost (I'm learning Alfas dont like the cold) I tried draining the floats on the carbs and discovered fuel in them?
I think a little had got in them from gravity and a little effort from the pump still not convinced its working properly though.
Still wouldn't start then I thought -5 degrees maybe it needs choke, put a cable tie around the choke mechanism and hey presto it started for the first time! Oil light went out and it ticked over, reved up for some reason at one point which was a bit scary it makes a propper motorbike noise.
DIY manifold leaks at the collector though
was a bit tight to get welder in.