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PostPosted: Sun Jun 25, 2017 7:44 pm 
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Location: derbyshire
I noticed when adjusting the idle that I have no adjustment left to raise it. the screw appears to have bottomed out.
Does anyone have any experience or idea about what is causing this please ?


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PostPosted: Sun Jun 25, 2017 8:09 pm 
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proff. patpending
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Seized? Broken or bent bracket?

Take the airbox cover off and see if the butterfly is moving when you turn the screw.

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PostPosted: Sun Jun 25, 2017 8:16 pm 
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Possible worn throttle spindle or linkage in the carb if it's not what pash suggests.


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PostPosted: Sun Jun 25, 2017 9:06 pm 
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You need a long screw :old: Sorts most problems out :D

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PostPosted: Mon Jun 26, 2017 10:21 pm 
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Location: derbyshire
Yeh sorry, forgot to say it is FI. not carb so it has the long speedo cable type flexi screw thing.

The screw is moving ok and is adjusting the tick over, so not seized, but it wont adjust it any higher than 1100 rpm which it did do before.

I will have to take it to bits and have a look, just wondered if anyone had been here before.


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PostPosted: Tue Jul 11, 2017 9:43 pm 
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Think Pink
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dread wrote:
Yeh sorry, forgot to say it is FI. not carb so it has the long speedo cable type flexi screw thing.

The screw is moving ok and is adjusting the tick over, so not seized, but it wont adjust it any higher than 1100 rpm which it did do before.

I will have to take it to bits and have a look, just wondered if anyone had been here before.

cant help wondering why u need more than 1100 rpm tickerover :D

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PostPosted: Fri Jul 21, 2017 10:20 pm 
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Location: derbyshire
When I start the bike from cold, I find the tickover a bit low for my liking and a quick tweak of the screw sorted it nicely. Now I have lost the option, out of threads.


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PostPosted: Sat Aug 05, 2017 10:15 am 
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Joined: Wed Jul 22, 2009 6:07 pm
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Location: derbyshire
Well I have taken a better look at the adjuster and everything looks Good, no bends, seizures or breakages.
It has simply run out of adjustment screw threads to turn the butterfly any more. The screw has bottomed out.
Could this be a TPS issue ?
It runs fine and will tick over at 1050 rpm but I believe this is going to drop gradually with no way of lifting it.
I am baffled, please can anyone throw any light on this phenomenon?


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PostPosted: Mon Aug 07, 2017 7:18 pm 
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Location: derbyshire
Any ideas Maz ?


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PostPosted: Mon Aug 07, 2017 8:36 pm 
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Yeah, loads ......what's the TPS and AFV reading ?

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PostPosted: Thu May 10, 2018 3:48 pm 
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Location: derbyshire
It's been a while life gets a bit difficult from time to time.

I am back trying to solve this idle speed issue.

Maz you asked for TPS and AFR values

AFR is 121.2 %

TPS seems unstable and I saw values from 3.5 % to 5.1 %

voltages of 0.99- 1.01 maybe wider

Does this throw any light on the issue it doesn't appear right to me is it maybe a TPS issue ?


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PostPosted: Thu May 10, 2018 7:05 pm 
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proff. patpending
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The TPS reading doesn’t look very well, maybe your throttle shaft is bust...

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PostPosted: Tue May 15, 2018 12:00 pm 
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I had a similar problem with my 06 Ully. When doing a TPS reset I unscrewed untill I got a zero reading then did a two more turns out. The problem was that this was not enough to reach the point where the butterfly is fully closed and you get that sticking feeling as you open the throttle. When i reset the TPS from that position I had loads of adjustment.


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PostPosted: Tue May 15, 2018 9:49 pm 
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Joined: Wed Jul 22, 2009 6:07 pm
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Location: derbyshire
Found the fault looking for a broken shaft, the nut on the end of the throttle shaft securing the pulley was loose. Schoolboy error.

Also found out the broken spring that I remade the end on is not strong enough to close the throttle when the nut is tightened so need a spring to repair the throttle body.

Tickover fine when the throttle is manually closed as the play between the shaft and pulley is now eliminated.

Spring or throttle body for spares anyone?

Thanks for the ideas, it HAS helped.


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