Here is the latest on this beast of a thing. Yesterday it only coughed and farted so I left it alone and had an overnight think while sleeping as we all do.
Starving for fuel was the best I could think of. So off with the fuel tank, out with the dial indicator and check the amount of lift on the injector needle. I had 0.45mm and not the 0.794mm (1/32") that it should have. So with a couple of spanners and a bucket to sit on I slowly adjusted it up then locked it in place. Made a few turns on the flywheel and double checked the lift and it had changed slightly so I adjusted it again and locked it up good n proper. Tested it again and fitted the fuel tank back on. Cranked it up and it ran for a couple of hits then stopped. From then on I could not crank it over compression so I went back to using the decompression lever and away it went for a short run then stopped.
Some dickhead did not turn the fuel on and as it was close enough to lunch I gave my shoulder a rest and me guts a feed. After lunch I put some more fuel in the tank turned the fuel on and lifted the injector needle and heard bubbles as fuel ran down and into the injector. So I tried another crank with the decompression lever and away it went and continued to run. This time it could be tamed a bit using the "speed wheel" and I got it down to running between 480 - 610 rpm. IT seems to run around the 580 - 600 then at times drops off to being down into the 480 range. Not sure at the moment if this is normal, needs running in a lot more or there is a governor issue.
Happy as a pig in shit at the moment having got this great lump of cast iron and turned it into a running engine.
https://youtu.be/PKrEcCaweo8