Done a full engine rebuild on my golf but can't get it to run properly. When I bought it the car had been unused for 6 years. There was no compression on 2 cylinders. That's all sorted now but when it starts it cuts out 2-3 seconds later . If you mess about trying and trying eventually it will run and warm up. When it was warm I set the ignition timing with the red lead disconnected from coil and it was ok idled a little low at 700 rpm but would run and rev all be it lumpy. I have replaced spark plugs dizzy cap and rotar and leads, the fuel system is untouched other than altering mixture to try get it going. Fuel pump runs and have tested each injector and each delivers fuel. I have Bosch FR6 DC + supplied by euro car parts on the reg and that's what I took out the Haynes suggested Bosch FR56 plugs. Any ideas what's wrong with it as have spent a fortune rebuilding engine and need it to run!!