cheers glen, i cant inspect the fuel lines on the 22, they are welded into the tank, (the only thing removable is the connection on the top of that line). if the prob continues, it may result in me pumping some compressed air down the pick up to ensure its got a clear flow.

the fuel filter is clean, (i have a glass filter pre pump, so this is not an issue). and the plugs i will check, but wouldnt this have more across the board symptoms with running) - even moreso conisdering that i have two spark plugs per cylinder....i would doubt both would be cactus. (ps none of them are old plugs)