Okay, it's definitely fuel delivery
related - though I'm confused that I was seeing fuel spurt from the injectors I guess it just isn't enough.
After randomly fiddling I turned it over again and guess what, it fired right up. Briefly, and sounding like it was firing on three strong cylinders. Then it faded off and stopped again.
I got Janet to turn it over and cracked open the injectors again, but with little success. I'd like to try priming the fuel system again preferably without cranking the engine incessantly but I'm confused by the bleed valve at the pump - a year and half ago I had a mechanic
go over the engine and he said that the valve was missing something and now I see what he meant.
And this is the part from the parts
catalog - I'm missing the manual knob on the left of the assembly:
However the guy was able to make it work somehow, at the time I'd taken on too much information and missed what he did.... guess I've got the rest of the weekend to find out!
Really I don't think I need to bleed at the injectors, the manual just talks about priming up to the fuel pump