Odd Problem

Reckless15 · Sep 7, 2011

Hello;

1st concern- I'v been having a weird problem while riding my K7 600.
When im riding and I am coming into a corner or slowing down and I shift from 2nd to 1st- half way between the shift I give it some trottle to match the rpms but when I twist the throttle nothing happens? like no revs,no sound just nothing.

2nd concern-There seems to be no middle ground while riding. I can have a steady throttle and all of a sudden my bike lunges forward and its very jerky while riding in town.

3rd concern-When I pull the clutch in and turn the throttle for a split second there is a delay in the rev,if you listen closely right around where my airbox is during the split second its like a bogging sound. I'v been on a few different bike recently with test drives and such and mine the only one that does all of these..

Searching and googling bring my to my TPS being off but I'v checked it and its set to the middle like its supposed to be.

any suggestiong would be great.

Stock bike- K&N air filter.

Thanks;
-Josh

gsXrjay09 · Sep 9, 2011

firs i would say down shifting from second to first while coming into a turn is probably not a good idea... and you also have to remember when downshifting from 4 to 3 or 6 to 5 etc you are going from an active gear to an active gear but from 2 to 1 you are going from and active gear then thru neutral then into a highly active gear...so for that its probably user error but there is no need to be doing that anyway its more dangerous then anything

your 2nd and 3rd concerns sound related to me...its hard to diagnose with out riding it myself cause it could or couldn't be user error but a good recommendation is on the front side of your throttle, where the cables tie in, youll see on one cable is a plastic almost cone shaped adjuster...this will not adjust the throttle power and will not shorten full throttle but instead it allows you to adjust the room for play meaning how much you can turn the the throttle before it actually engages ...for an 09 the bikes the recommended adjustment is a 1/4" throttle turn...but you have to also compensate for how you ride. if your not super handy just go to gsxrservicemanuals.com and download the pdf manual it will explain in more detail and show pictures on how to do this...goodluck let me know how you make out

Reckless15 · Sep 9, 2011

I probably should have been more specific on the corner detail, I'm not talking going full out into a corner and leaning into it.. I mean slowing down to TAKE a corner/turn onto a road.
I have my throttle already adjusted so there is no play in it.

I spoke with a mechanic in town and he said Since I have my servo?(The butterfly valve in the exhaust Disconnected) and a K&N air filter it might be running to rich or whatever.. So I put my stock air filter back on and it seems to have helped with the bogging sound while reving but the diving is still there a bit, but not near as much.

MAD_ARAB · Sep 9, 2011

You need to have the proper slack in the throttle cables as it's there to allow for when the bars are turned as the cables tighten up. Make sure you main idle is about 1,200 RPM and check the TPS setting.:cheers

gsXrjay09 · Sep 13, 2011

Reckless15 said:
I probably should have been more specific on the corner detail, I'm not talking going full out into a corner and leaning into it.. I mean slowing down to TAKE a corner/turn onto a road.
I have my throttle already adjusted so there is no play in it.

I spoke with a mechanic in town and he said Since I have my servo?(The butterfly valve in the exhaust Disconnected) and a K&N air filter it might be running to rich or whatever.. So I put my stock air filter back on and it seems to have helped with the bogging sound while reving but the diving is still there a bit, but not near as much.

if you have no slack in the throttle or throttle cable it is adjusted incorrectly...in the service manual it recommends 1/4" of play...cables do stretch and it may require adjustment over time...over adjustment can be just as bad if not worse then under adjustment.

and the servo "butterfly valve" does close to nothing in relavence to actual performance of the bike...it simply opens and closes depending on RPM range to allow less air flow at low rpm or idle to keep the noise polution down lol...once you disconnect it it remains open at all times...
you should readjust the throttle to the proper specs and see if the problem persists.

nykuryu · Sep 17, 2011

gsXrjay09 said:
if you have no slack in the throttle or throttle cable it is adjusted incorrectly...in the service manual it recommends 1/4" of play...cables do stretch and it may require adjustment over time...over adjustment can be just as bad if not worse then under adjustment.

and the servo "butterfly valve" does close to nothing in relavence to actual performance of the bike...it simply opens and closes depending on RPM range to allow less air flow at low rpm or idle to keep the noise polution down lol...once you disconnect it it remains open at all times...
you should readjust the throttle to the proper specs and see if the problem persists.

How would it keep pollution down? That's what the cat is for. According to Suzuki engineers it creates back pressure at certain rpm/loads to increase mid range torque. SET is Suzuki Exhaust Tuning, not Emission Tuning.

gsXrjay09 · Sep 20, 2011

gsXrjay09 said:
it simply opens and closes depending on RPM range to allow less air flow at low rpm or idle to keep the noise polution down lol...once you disconnect it it remains open at all times...
you should readjust the throttle to the proper specs and see if the problem persists.

I said noise pollution not emissions...and there has been speculation that it may have a positive and negative affect on the performance but basically at low revs (RPMs) its give or take 1/4 open causing more back pressure yes which does cause increased torque but at such low revs your not throttling enough to notice but while its restricting air flow, Causing more back pressure, it is also silencing or lower the amount of sound output coming from the exhaust.

once removed or disabled it remains open allowing more air flow and most claim it increases throttle response and performance. also gives a cleaner more natural sound to your exhaust.
I have heard of few problems directly related to disabling the servo or removing it...maybe with disabling the FI light but not the valve itself.

Basically like i said before your problem may be related to the adjustment of your throttle or to add if you have done any performance upgrades you may need a tune which can cause flat spots in your power band making it seem almost as if the throttle is cutting in and out.

Odd Problem

Reckless15

gsXrjay09

Reckless15

MAD_ARAB

gsXrjay09

nykuryu

gsXrjay09

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