[Ducati] 900SS - Wits End

[Scott Cloninger]

An SS idling high and failing to return to normal idle from higher revs
is generally a sign of a vacuum leak.  Check for small cracks in the
rubber boots between the carbs and the heads, and check for air entering
between the carbs and the boots.  Last time mine had this characteristic
the tried-and-true "spray carb cleaner around the manifolds and see if
the idle changes" trick didn't work, but a removal, cleaning, and
reseating of the carbs did.

Hope this helps,

Scott Cloninger, P.E., MBA
Engineering Manager
CEI Enterprises, Inc.

-----Original Message-----
From: cedwards105 [mailto:cedwards105 at cfl.rr.com] 
Sent: Wednesday, October 24, 2007 10:00 AM
To: Ducati Owners Group
Subject: Re: [Ducati] 900SS - Wits End

I think, and I know the experts will correct me if I'm wrong, there is a

vacuum bladder at the top of the carb. If this has a slight hole, cut
etc. I 
think the carb slide will remain in the up position and you will
experience 
the rpm's remaining high.

----- Original Message ----- 
From: "Alex Pearsall" <rebelpacket at rebelpacket.net>
To: "Ducati Owners Group" <ducati at ducati.net>
Sent: Wednesday, October 24, 2007 11:30 AM
Subject: Re: [Ducati] 900SS - Wits End


>
> Hey Peter,
>
> Thanks for the reply! Throttle cables was my first thought, but the
cables
> move freely, and return home with a audible "snap".  I'll run the bike
> without the airbox lid and filter tonight, see if I can't see a slide
> sticking.  I'm using the stock Mikuni carbs.
>
> How lean is your horiz cylinder?  My plug is coming back white, and
the
> horiz cylinder gets noticiably hotter than the vert barrel + head.
>
> -Alex
>
>
>
>> My 900SS has a leaner looking plug on the horizontal cylinder than
the
>> verticle cylinder as well so I don't know if that part is just
normal.
>> Any chance you are just having a sticky throttle cable or having the 
>> cable
>> jam up somewhere?  If you have the flat-sides this is possible. 
>> Something
>> is keeping the slide from coming back down, either a sticky slide or
a
>> cable problem would be my guess.
>>
>> Peter
>>
>
>
>
> -- 
> Alex Pearsall
> http://www.rebelpacket.net/
>
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> Mailto: cedwards105 at cfl.rr.com 



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