Aron,
I would raise the needle if the float level is correct and the tank vent is OK.
Modern electronic MC ignitions are somewhere between very, very good
and excellent. 1986 Kawasaki stock ignition fired R gap plugs flawlessly
at 28 PSIG boost. Unfortunately..... it finally started detonating in sixth
gear.
Bryan
atrav wrote:
> With a constant velocity carb, the Keihin motorcycle type, how do you know
>whether to raise the
> needle or increase main jet size?
>
> What's happening is that between like 95 mph and 120 mph I have quite a
>stumble at part throttle.
> When I go WOT, it's fine. If I close the throttle, it'll speed up for a
>second. So, I think at
> partial throttle at that speed it's running too lean.
>
> Also, if this were ignition weakness, wouldn't it get worse at WOT?
>
> -Aron-
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