Richard,
Black soot is usually a carb problem, though it would also probably show
up in the #3 also. There is also the possibility of ignition problems
on that cyl. A place to start, anyway...
Jeff - Baby Blue
On 4/26/2013 1:00 PM, Richard Iddon wrote:
>
> I have just fired up my 912S after new sprag clutch, fitting soft start, new
plugs and 6 month lay up. It has always been quite smooth before but now it
feels
very rough. I pulled the plugs and the two from no. 1 cylinder are black and
sooty whereas all the others are clean / whitish. Carb balance is not perfect
but not at all bad.
>
> Any idea's why this should be and where to start would be appreciated.
>
> Richard Iddon.
>
> G-RIXS
>
>
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