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91 Bimota YB10

 
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AltoBimota



Joined: 10 Aug 2011
Posts: 6
Location: Altoona, PA USA

PostPosted: Fri Sep 07, 2012 9:36 pm    Post subject: 91 Bimota YB10 Reply with quote

I have a 91 YB10 and it's developed a problem. When it is started cold it runs great. After about 15 minutes once everything is hot the bike begins to stumble when you come to a stop. The idle is very rough and the bike usually stalls when I attempt to pull out from a stop. I've had the carburetor cleaned and checked/adjusted but the problem persists. Can anyone suggest where to look from here?

Thanks!
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Fri Sep 07, 2012 10:15 pm    Post subject: Reply with quote

Have you changed the fuel filter.
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AltoBimota



Joined: 10 Aug 2011
Posts: 6
Location: Altoona, PA USA

PostPosted: Sat Sep 08, 2012 7:30 pm    Post subject: Reply with quote

Carbs cleaned and adjusted, fuel filter replaced, and spark plugs replaced. Almost seems like an electrical issue. Perhaps something breaking down under the heat. Just looking for suggestions. Anyone have any ideas?
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Pompey



Joined: 31 Jul 2008
Posts: 2311
Location: Marlborough

PostPosted: Sat Sep 08, 2012 10:26 pm    Post subject: Reply with quote

Change the plugs. One foul plug and you'll get those symptoms...fingers crossed.
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Sat Sep 08, 2012 10:54 pm    Post subject: Reply with quote

Here's an odd one - just check the sidestand springs are ok and if the small one has broket replace it
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Pompey



Joined: 31 Jul 2008
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Location: Marlborough

PostPosted: Sat Sep 08, 2012 10:56 pm    Post subject: Reply with quote

Thats another good call evil chuck ... could be the cutout.
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Sat Sep 08, 2012 11:02 pm    Post subject: Reply with quote

Pompey wrote:
Thats another good call evil chuck ... could be the cutout.

Innit - and how we laughed after we found that
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AltoBimota



Joined: 10 Aug 2011
Posts: 6
Location: Altoona, PA USA

PostPosted: Sun Sep 09, 2012 2:05 am    Post subject: Reply with quote

The sidestand spring seems fine. As far as it pulls the stand back rapidly.

But I'll have a look and let you know.
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Pompey



Joined: 31 Jul 2008
Posts: 2311
Location: Marlborough

PostPosted: Sun Sep 09, 2012 9:04 am    Post subject: Reply with quote

i am sticking with plug failure Wink
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Sun Sep 09, 2012 4:14 pm    Post subject: Reply with quote

I'd go with possible HT leads, bad connection, unscrew each end for the plug caps and if you have spare length trim the ends of and remake the joins, as the plug caps simply screw into the bare wire ends and perhaps one of them just isn't making a proper connection, thus intermittent spark, but if after running you could check this by pulling the plugs and seeing if any are wet with uncombusted fuel?
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Sun Sep 09, 2012 6:43 pm    Post subject: Reply with quote

Keep it simple one obvious thing at a time such as plugs Wink
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2bims



Joined: 03 Apr 2010
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PostPosted: Sun Sep 09, 2012 7:04 pm    Post subject: Reply with quote

Hello Oily, sent you a couple of PM's on Friday?
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oily



Joined: 05 Apr 2008
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Location: worcestershire

PostPosted: Sun Sep 09, 2012 7:14 pm    Post subject: Reply with quote

I'm aware.
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Evilchicken0



Joined: 12 May 2010
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Location: London

PostPosted: Sun Sep 09, 2012 7:16 pm    Post subject: Reply with quote

oily wrote:
I'm aware.

Hello Ware
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