tuning

[mixerman]

Is there maybe a load of junk in the float bowl - gets sucked towards the jet when it runs - falls back when it stops. I assume the fuel pump is working ok - but test it by pumping some fuel into a bottle. It should pump frantically producing an almost continuous stream. If not - it could be the filter blocked/fuel pipe blocked or kinked/ or just dirty points.

if u have read my theads u will see i have done all that their is really nothing to else to do, i am waiting 4 a replacement carb as i am convinced it is that if it is not that then it is the graveyard in the sky as their is nothing else to do
phil

[bmcecosse]

SU carbs don't fail like that - you are grasping at straws. Check the carb over - but if there really is no 'gunk' blocking it up, and the piston rises and falls - there is nothing else to it !

[Blunt]

nobodies mentioned air filter (I think)

have you checked?

just a thought

[samheath100]

Is the piston worn? I have just bought a carb overall kit from oldbury in birmingham, Must say that it is a great kit as you get everything you possibly need.