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Slow Speed Stutter


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#1 captaincautious

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Posted 01 April 2012 - 06:03 AM

I have a 2010 I recently purchased new. It has approx. 3000miles. I have noticed recently a pronounced stutter when starting ride in 1st gear for a few seconds. It seems to happen when I initially warm bike up or when bike was shut off for a short duration like 30 minutes. It resembles a two-stroke when you first take-off and clear it out. Other than that, it runs fine. Any suggestions?

#2 networkguy

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Posted 01 April 2012 - 07:19 AM

I have a 2010 I recently purchased new. It has approx. 3000miles. I have noticed recently a pronounced stutter when starting ride in 1st gear for a few seconds. It seems to happen when I initially warm bike up or when bike was shut off for a short duration like 30 minutes. It resembles a two-stroke when you first take-off and clear it out. Other than that, it runs fine. Any suggestions?


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#3 Bugnatr

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Posted 01 April 2012 - 08:03 AM

I had the same thing with my 04 recently. Didn't do this every start but a couple times a day when riding all day. A can of seafoam seems to have cleared up the trouble so I suspect it was a dirty injector. However your bike has such low miles I doubt that's the trouble but how long has this been going on? Bad gas perhaps? Can't hurt to run some seafoam or other type of injector cleaner in your next tank of gas.

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#4 captaincautious

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Posted 01 April 2012 - 10:11 AM

Bike is standard shift. I would guess it has been happening for about a month. I thought at first I was imagining it. I think it is probably a little more obvious now. I did add a little seafoam but haven't tried it out yet. Will probably later on today.

#5 Niehart

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Posted 01 April 2012 - 10:17 AM

There is a lot of useless carp in this blog but also some good info.

http://www.fjrforum....howtopic=144450

Raise your warm idle speed to 1100 rpms (not less!).

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#6 Bounce

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Posted 01 April 2012 - 08:15 PM

What's your idle speed once at operating temp?
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#7 captaincautious

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Posted 02 April 2012 - 03:05 PM

Cold speed is around 1100rpm and drops to about 850-900 when warm. Counter clockwise on the slow speed idle adjustment knob?

#8 TheZsdad

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Posted 02 April 2012 - 03:58 PM

What's your idle speed once at operating temp?


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#9 TheZsdad

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Posted 02 April 2012 - 04:02 PM

Cold speed is around 1100rpm and drops to about 850-900 when warm. Counter clockwise on the slow speed idle adjustment knob?


To low, SB 1100 at normal operating temp.
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#10 SkooterG

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Posted 02 April 2012 - 04:56 PM

Yep, too low of an idle is the problem. Bump that up.
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#11 silver spirit

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Posted 03 April 2012 - 06:46 PM

Cold speed is around 1100rpm and drops to about 850-900 when warm. Counter clockwise on the slow speed idle adjustment knob?


Clockwise to increase idle speed. Adjustment to be made when engine is warmed up

Mine was set too low out of the box, and it stalled two or three times on the initial ride

Made a huge difference when I bumped up the idle to the recommended 1100 RPM

#12 TheZsdad

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Posted 04 April 2012 - 11:17 AM


Cold speed is around 1100rpm and drops to about 850-900 when warm. Counter clockwise on the slow speed idle adjustment knob?


Clockwise to increase idle speed. Adjustment to be made when engine is warmed up

Mine was set too low out of the box, and it stalled two or three times on the initial ride

Made a huge difference when I bumped up the idle to the recommended 1100 RPM


You may find when increasing the rpm (clockwise) it is easier if you twist the throttle a bit. (give it some gas)
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