5k-6500 rpm cut out Brand new bike!

[rwillower]

 
so i just picked up my 2nd gs500f since suzuki is having such a great deal on these bikes
got about 300miles on it and noticed around 55mph-70mph   the bike all of a sudden starts
surgeing at 5500rpms all the way to 7000rpms   i run high test in it and i know the bike is
just getting broken in and all but my 05 gs never did this and actually runs better than my
09(it was a left over)  any help would be greatly appreciated

[Twisted]

You got fuel in it?

[Pelikan]

Highly doubt this has anything to do with it, but the GS is designed to run on regular gas, not premium or mid grade.

[rwillower]

yea theres almost a full tank... i always ran high test in all my toys (sleds,atv,bikes)  didnt know that it wasnt required for
gs..  will try running 87 through it next tank but my 05 has always had premium in it and thats got 22k on it.. i did notice
that when it starts cutting out and surgeing a little bit that if i use the choke... the second i flip the lever it goes away
seems like its running lean   im not in high elevations or anything like that either

[ghostrider_23]

My bike is new with 700 miles on it. I only run the good stuff in it too and have had no problems with it. It sounds like you have a fuel flow or restriction going on. If it is new, take it back to the dealer and have them find the defect.

[The Buddha]

You have surging @5K, that is very very uncommon, but not fuel flow related. Does it run fine past 7K though ?
My bet is they made a mistake in the needle assembly ... what defect - no clue. But running out of gas under load @ 1/2 throttle ... well it will just feel like its run out of gas. A lean surge @ 5Kis just that, lean surge, however if it was assembled right it shouldn't surge, that is very very lean, it would barely be perceptible, a little hotter running motor, a little down on power and maybe a little surgeing on steady throttle if you stay @ that same throttle a few minutes. That is a couple 100 rpm worth of surge. 1500 rpm is not right.
Yea I call assembly/manufacturing defect too.
Cool.
Buddha.

[rwillower]

the bike will power through it with no cut out at all if  im twisting it up good...
its only when im holding the throttle at the mentioned rpms just cruising

[mass-hole]

I had been running 93 in my bike for whatever reason and when I tired switching back to 87 it ran like crap. Maybe it was the tune, or maybe it was the 5 degree advancer, I never heard anyone else mention that though.

[The Buddha]

the bike will power through it with no cut out at all if  im twisting it up good...
its only when im holding the throttle at the mentioned rpms just cruising

5K lean surge 1500 revs worth - well weirder thnings have happened.
I'm still leaning towards a freak case of manufacturing defect/s where your needles are at the highest limit of their range. and the emulsion tubes are @ the lowest allowable dia, and maybe you have a wee bit low float in 1 carb etc, and its got you the perfect storm.
Tell the dealer to fix it, but dont let them coerce you into buying stuff, especially a jet kit - they are supposed to know enough about bikes to fix a bike with out throwing a kit in anything and everything.
Cool.
Buddha.

[jeffdodge]

About the GS being designed to run on regular, I call BS on that. I have a sticker under my seat that says to run 91 octane or better from the factory.

[kman]

the manual says 87 octane.  All of the higher grades have ethanol content, at least in Iowa, which makes everything run lean because the fuel is oxygenated.

If you have the 5 degree advance you should keep running premium.  That is what premium is for.

[Bluesmudge]

Yeah, the compression on a GS is not high enough to need anything but regular gas. If spending even mo money for gas makes you feel better, have at it.

[rwillower]

im in ny... they run 10% garbage in all grades (etahnol)
dealer is calling suzuki on this issue.. im gonna suggest what u said about the clip and emulsion tubes
now if it would only stop raining i could get the bike to them

[rwillower]

bike is totally stock..its an 09 500f   

[rwillower]

how hard of a job is this to do myself?  im good with motors and working on engines  done a few carb rebuilds on my sled (twin mikunis)
is it hard to get carbs off? never messed with either of my GS's except oil and filter changes and air filter

[The Buddha]

K with ethanol there is the negative aspect, where it does run lean, ethanol has oxygen and doesn't consume as much oxygen when it burns ... so lean ness is the net effect.
However ethanol is an effective ... what's the official term ... combustion slower downer ... yea ... so it keeps the bike from hurting itself by detonating.
Cool.
Buddha.

[rwillower]

maybe b4 i tear into it i'll run some ethanol treatment in it and see what happens..  i use k-100 in my sleds and u can feel
the difference when u fill up and didnt put any in

[The Buddha]

how hard of a job is this to do myself?  im good with motors and working on engines  done a few carb rebuilds on my sled (twin mikunis)
is it hard to get carbs off? never messed with either of my GS's except oil and filter changes and air filter

What are you talking about "doing" ?
I thought we were going to bash them over the head with the manufacturing defect theory ...

Its freaking easy to fix it, buy 132.5 mains, 20 pilots and a washer for under the needle and set air screws to 3 turns out ... slam dunk.
I make a pack with these jets ... send me $25 and I'll send you a set.
Cool.
Buddha.

[rwillower]

what do u mean by a washer for the clip?  i've re-jetted my sled but that was just swapping out mains..
i've been reading on line about re-jetting gs500s and some require u to drill the slides and all this other
stuff im not sure i'd like to do..  im assuming ur "kit" does both carbs correct?  if its just swapping stuff out
and no drilling required then im in..    after doing this should i get a k&n filter?   im going to leaving the pipe stock

[rwillower]

also im a huuuuge gas mizer    my bike got 60.6mpg on its first fill up...
how much will this kit affect my mpg