Well, what did I say about BL parts? Went for a err.. refreshment on friday night, jumped into d'Avenger to the bar and after one jar (honest!) and rrrrr.rrrrrr..rrrrrrrr. Okay says I to myself, 1970's motoring.
Lid up, main HT lead out, rrrr - sparksparkspark. Okay the ignition is fine,next to the pretty worn out carbie, fuel smell, hand around it, 'click!' the metering tube had jammed and my paw-ing around in the dark I had free'd it up again, Avenger started.
So the SU's carbies days are numbered, bloody well knew anything from a Marina was not going to work. I took the SU off it the next day, done, kaput, the richness mixture I see was adjusted off the scale, that is the screw at its minimum ans still soaking with juice, so the innards of the metering needle and tube must be worn out.
When I removed a spark plug there was too rich fuel vapour coming out like steam! Dead carbie.
So, Ebay I found a Stromberg CD3 WITH the linkage for the Hillman Avenger throttle rod - hard to find, its bought. Okay its needled for a 1500cc but thats better than the leaking hose currently in it! Next on the agenda, a 1300cc (or 1250 would do) CD3 needle.
Happy motoring folks.