with the Carb Tune and its solid rods, you may find you have more accurate results by hanging the unit upside down, seriously, that is how I use mine on Laverda triples.
So I balaced the carbs and had it checked by the local bike shop.
Still spitting back at idle.
Pilot screws are a full turn out now. Im pretty sure Red will have used the 17.5 pilots, I have emailed him to ask. I think he is either sick of my questions or gone away. Perhaps both.
Anything else to check or continue winding out the mixture screw? Ill pull the plugs at some stage to check colouring.
OK. We're obviously talking Mikuni carbs. 17.5 idle jets and 1 turn on the mixture screw should be OK. If it's still running lean at idle you might have an air leak between a carby and the cylinder head.
In the absence of a built in damper if the instrument readings are dancing around all over the place fit a clamp of some sort on the feed tube and progressively tighten until everything calms down.
It's a bit rough and ready, just don't overtighten otherwise you will block the flow.
EDIT: Actually I'm surprised a variable damper is not fitted to the Carbtune.
Mind you I am a clanky fitter so I am sure an Instrument Tech will be along in a minute.
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