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Idle will not go below 4000 RPM

 
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vasco

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Since: Jul 22, 2005
Posts: 5



(Msg. 1) Posted: Mon Aug 15, 2005 1:56 pm
Post subject: Idle will not go below 4000 RPM
Archived from groups: rec>motorcycles>tech (more info?)

Hi,


I am trying to fix my Suzuki GS 450 LJ and ran into a problem that I

can't seem to figure out.
My idle won't go below 4000 RPM. I tried tweaking the RPM with the
throtle stopper screw and the carbs, but I can only make it higher (I
got to 6000 RPM and I gave up) but I can't make it work at the normal
1000-1350 RPM.
Any suggestions? What should I look for?


Thanks,


Vasco

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rkleinsch121611

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Since: Dec 09, 2004
Posts: 862



(Msg. 2) Posted: Mon Aug 15, 2005 4:10 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

vasco wrote:
> Hi,
>
>
> I am trying to fix my Suzuki GS 450 LJ and ran into a problem that I
>
> can't seem to figure out.
> My idle won't go below 4000 RPM. I tried tweaking the RPM with the
> throtle stopper screw and the carbs, but I can only make it higher (I
> got to 6000 RPM and I gave up) but I can't make it work at the normal
> 1000-1350 RPM.
> Any suggestions? What should I look for?

Most likely a problem with the cable or return spring. Possibly
a twistgrip or mixture problem, but unlikely unless they've been
worked on recently.

Back off the stopper screw.

Inspect the cable for fraying and to make sure the ends
are seated correctly.

If this is a CV carb with a butterfly valve, try pushing
on the carb lever where the cable connects to see if you
can close it further.

Inspect the return spring to make sure it's in place and
working properly.

Inspect the throttle slide to make sure it travels freely.

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Butch




Joined: Aug 12, 2005
Posts: 10



(Msg. 3) Posted: Tue Aug 16, 2005 8:22 am
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]

hi vasco,
you need to adjust the throttle cable linkage. Should be adjustable just below the throttle on the handlebar. And, you may have an ajustable coupling inline about 1/2 way down the throttle cable. butch
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vasco

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Since: Jul 22, 2005
Posts: 5



(Msg. 4) Posted: Tue Aug 16, 2005 8:53 am
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Thank you for your answer. The cable was too tight, it needed to have
some slack. Seems fine now.

Thanks
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rkleinsch121611

External


Since: Dec 09, 2004
Posts: 862



(Msg. 5) Posted: Tue Aug 16, 2005 12:05 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
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vasco wrote:
> Thank you for your answer. The cable was too tight, it needed to have
> some slack. Seems fine now.

Glad to hear it.

That whole assembly deserves an occasional inspection to make
sure it's still working right and that there are no frayed wires
which could cause it to stick open. Depending on the cable type,
some are lubed periodically while some with plastic linings are
not. It's an easy maintenance task that's worth becoming familiar
with.
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Dan Dunphy2

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Since: Oct 08, 2004
Posts: 4



(Msg. 6) Posted: Tue Sep 20, 2005 4:57 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Sounds like sticking advance weights.
Dan
On 15 Aug 2005 13:56:59 -0700, "vasco" <vpedro DeleteThis @gmail.com> wrote:

>Hi,
>
>
> I am trying to fix my Suzuki GS 450 LJ and ran into a problem that I
>
>can't seem to figure out.
> My idle won't go below 4000 RPM. I tried tweaking the RPM with the
>throtle stopper screw and the carbs, but I can only make it higher (I
>got to 6000 RPM and I gave up) but I can't make it work at the normal
>1000-1350 RPM.
> Any suggestions? What should I look for?
>
>
> Thanks,
>
>
>Vasco
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rkleinsch121611

External


Since: Dec 09, 2004
Posts: 862



(Msg. 7) Posted: Tue Sep 20, 2005 7:00 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

fweddybear wrote:

> Look for something that is binding... maybe take a look at the throttle
> body and see if the butterflies are opening and closing properly....

I think he found the problem a week or two ago and it was
a sticky or badly adjusted cable.
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fweddybear

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Since: Oct 31, 2003
Posts: 162



(Msg. 8) Posted: Tue Sep 20, 2005 7:35 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

> Sounds like sticking advance weights.
> Dan
> On 15 Aug 2005 13:56:59 -0700, "vasco" <vpedro RemoveThis @gmail.com> wrote:
>
>>Hi,
>>
>>
>> I am trying to fix my Suzuki GS 450 LJ and ran into a problem that I
>>
>>can't seem to figure out.
>> My idle won't go below 4000 RPM. I tried tweaking the RPM with the
>>throtle stopper screw and the carbs, but I can only make it higher (I
>>got to 6000 RPM and I gave up) but I can't make it work at the normal
>>1000-1350 RPM.
>> Any suggestions? What should I look for?
>>
>>
>> Thanks,
>>
>>
>>Vasco

Look for something that is binding... maybe take a look at the throttle
body and see if the butterflies are opening and closing properly....

Fwed
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The Older Gentlema2

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Since: Nov 16, 2003
Posts: 3479



(Msg. 9) Posted: Wed Sep 21, 2005 2:55 am
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Dan Dunphy <dandunphyREMOVESPAM.RemoveThis@pcisys.net> wrote:

> Sounds like sticking advance weights.

On a bike with electronic ignition?


--
Trophy 1200 750SS TR65 GPz550 CB400F CD200 CB125S DT50MX
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....
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rkleinsch121611

External


Since: Dec 09, 2004
Posts: 862



(Msg. 10) Posted: Wed Sep 21, 2005 11:35 am
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
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The Older Gentleman wrote:
> Dan Dunphy <dandunphyREMOVESPAM DeleteThis @pcisys.net> wrote:
>
> > Sounds like sticking advance weights.
>
> On a bike with electronic ignition?

BMW airhead for one.
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The Older Gentlema2

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Since: Nov 16, 2003
Posts: 3479



(Msg. 11) Posted: Wed Sep 21, 2005 6:55 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
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Rob Kleinschmidt <Rkleinsch1216128 RemoveThis @aol.com> wrote:

> The Older Gentleman wrote:
> > Dan Dunphy <dandunphyREMOVESPAM RemoveThis @pcisys.net> wrote:
> >
> > > Sounds like sticking advance weights.
> >
> > On a bike with electronic ignition?
>
> BMW airhead for one.

Really? Blimey.


--
Trophy 1200 750SS TR65 GPz550 CB400F CD200 CB125S DT50MX
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....
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rkleinsch121611

External


Since: Dec 09, 2004
Posts: 862



(Msg. 12) Posted: Wed Sep 21, 2005 7:47 pm
Post subject: Re: Idle will not go below 4000 RPM [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

The Older Gentleman wrote:
> Rob Kleinschmidt <Rkleinsch1216128.DeleteThis@aol.com> wrote:
>
> > The Older Gentleman wrote:
> > > Dan Dunphy <dandunphyREMOVESPAM.DeleteThis@pcisys.net> wrote:
> > >
> > > > Sounds like sticking advance weights.
> > >
> > > On a bike with electronic ignition?
> >
> > BMW airhead for one.
>
> Really? Blimey.

The airhead ignition canister dates from the early '80s
and may occasionally need to be disassembled, lubed,
or otherwise fiddled with. Spinning magnet with a
centrifugal advance passing by a Hall effect sensor.
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