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Old 12-12-06, 11:40 AM   #11
fizzwheel
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It should stay on until you turn it off. It shoudlnt disengage for no reason.

You could have a general carb problem, which is causing the problem. Something like carbs out of balance will effect the way the bike runs. So will gunk in the carbs caused by gone off fuel if its been stood for ages.

Is it much more noticeable on the cold damp morning's we've had recently ? If so it might be carb icing thats causing the bike to run poorly. When I had carb icing last winter it wouldnt idle etc when I stopped at junctions after I'd be ridnig it.

Do you run your bike on supermarket fuel. If so try a tank of Shell Optimax or one of the other decent fuels and see if it runs any better.
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Old 12-12-06, 11:47 AM   #12
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Had the carbs balanced back in June (2000 miles ago) & I run it on hte cheapest unleaded that Esso has to offer.

Yup, only become apparent on these cold winter mornings!
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Old 12-12-06, 12:04 PM   #13
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Does it run alright at other revs? Just that I'd maybe suspect carb icing.
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Old 12-12-06, 12:12 PM   #14
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Yeah, I think looking at the advice everyone's been giving on here that it's something to do with the choke and/or choke plungers.

The bike runs fine till the revs drop.

When the bike is warm it idles at 1500 (the speed I set it at).

When cold the idle drops anywhere to 1000 at which point it stalls.

The choke should keep the revs up (till the bike is nice & warm) but it's disengaging. So that said, looks like I'm onto the garage to "sort it out".

That bike spends more time at the garage than in my driveway!
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Old 12-12-06, 12:52 PM   #15
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erm, the bloke down the garage said don't worry about it.
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Old 12-12-06, 01:06 PM   #16
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I'd up the idling speed another 100 or so rpm. Won't do the bike any harm whatsoever, but might help. Try it and see. If it makes no difference then just reduce it again. I always run my bike at 1600 rpm idle, which is faster than most peeps would do, but guess what? It never stalls any more (or at least not without my help ).


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Old 12-12-06, 03:43 PM   #17
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Quote:
Originally Posted by Kinvig
erm, the bloke down the garage said don't worry about it.
Well if that was me and my bike, I'd want it sorted out so that it didnt stall at junctions like you say that has potential for some nastyness.

Sounds to me like your choke just isnt working or you are suffering from carb icing. If that mechnic doesnt want your custom, then take your bike somewhere else.
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Old 12-12-06, 03:49 PM   #18
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I hardly use the choke, more because i dont want to keep the bike running outside the house, i just start and go. Yep its lumpy but by the time i reach the end of the road its starting to run a little better and i just keep on top of the revs wanting to be around 1000. I dont like riding with the choke on as when you close the throttle and braking, the engine is still being fed fuel and making the bike want to go forwards, in total your braking is messed up. Mabey london is yet not cold enough.
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Old 12-12-06, 04:25 PM   #19
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It's pretty cold up here and mine doesn't do that...
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Old 12-12-06, 04:36 PM   #20
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Out of curiosity - how many rpm do you set the choke to (approx.) when using it?
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