Howdy

Tank has been running a bit crook since last weekend. ONLY when starting cold, and ONLY on petrol it starts and then idles up and down through the rev range (like it's confused! lol) and spits out a bit of black smoke as though it's running rich. Only does this till it's warm (literally a minute or so) then idles beautifully and no smoke whatsoever.

My first thought was dirty sensors, so I cleaned them with no success. My second thought is could my injectors be stuffed or at least on the way to being stuffed? I put an injector cleaner through it the other day and no change, but realise if they are going 'kaputsky' (Russian for 'up the shlt' lol) that it wouldn't do much.

Never having done injectors before, is this something a 'dual left handed' individual like myself should have a lash at??

Thoughts??

Thanks a million in advance!!