Anyone having the jerky on/off throttle syndrome with their 06-07's?? - Page 2 - Sportbikes.net
 

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Old 09-21-2007, 09:12 AM   #16 (permalink)
thelazyone
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Quote:
Originally Posted by GSXRod24
A TRE will help a little bit, atleast I felt it did on my 04 750. Just something you have to learn to control , thats all I can say.
+1, Just be easy on the throttle.
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Old 09-26-2007, 11:50 PM   #17 (permalink)
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I always start the bike in neutral. On occasion after a cold start I will have a slight hesitation or a jerky feel when first riding it out of the driveway around 3k RPM. If I rev up the engine a few grand or after it's warmed up, this never occurs again. Is this how the problem started for everyone? And what exactly is this SET valve?
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Old 10-05-2007, 04:08 PM   #18 (permalink)
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Haha even the GSXR Cup series guys have the problem sometimes.

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"When I try and get on the gas getting out of the slow turns, the throttle doesn’t seem to want to work smoothly and is a bit hesitant."

Yeah dude, trust me we can sympathize.
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Old 10-30-2007, 08:21 AM   #19 (permalink)
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I brought the bike into a local shop & the owner took it for a test drive. He was still unable to figure out what the problem is.
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Old 12-28-2007, 01:00 PM   #20 (permalink)
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I took out my secondary throttle valves and its pretty much gone. There are a few times where it comes back but not nearly as bad. It seems like the STV's are a problem but there is something else that happens and thats what makes it really bad. So now the worst it ever gets is still not as bad as it was. I found out this was the reason I couldnt hold wheelies for a long time. I thought I had lost my touch but it was just the damn bike.

If you dont want to remove the plates try checking the TPS for the secondary plates. Its a lil more in depth then just jumping a connection with a paperclip If the STV's are all within spec and it still does it get your throttle bodies synced because they probably need it. Then, if it still happens, remove the STV's.
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Old 01-28-2008, 07:30 AM   #21 (permalink)
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This is common on all GSXRs its just how they are, jerky throttl, they have fixes for this is called throttle control and tighetn your chain!
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Old 06-23-2008, 02:58 PM   #22 (permalink)
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^ Oh jesus christ.
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Old 06-24-2008, 12:10 AM   #23 (permalink)
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Believe me it is a real problem. Mine fortunately hasnt done it much this year. Ive been starting it in neutral, and waiting for the fuel pump to cycle(and the dash display) before pushing the start button. If you do that..u should be fine. The only time its reared its ugly head is on a rare occasion when I have to stop-turn the bike off--and then start it again a few times. I think I got a handle on it now and the bike runs great!
PS--My set valve is unhooked(in the open position), I got a K&N filter and -1 cs sprocket.
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Old 06-24-2008, 07:35 AM   #24 (permalink)
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I usually wait for the fuel pump to cycle before hitting the start button, but never really paid attention whether it would do this if I didn't wait, and not do it if I did. Have to check that out.

But turning it off and restarting a few minutes later (esp when stopping for gas) usually induces the issue if it wasn't already doing it. It's only stopped doing it after turning off the bike and then restarting it once.
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Old 07-06-2008, 04:14 AM   #25 (permalink)
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Quote:
Originally Posted by steeltoe View Post
Haha even the GSXR Cup series guys have the problem sometimes.

Superbike News Motorcycle Racing - General News

"When I try and get on the gas getting out of the slow turns, the throttle doesn’t seem to want to work smoothly and is a bit hesitant."

Yeah dude, trust me we can sympathize.
This has nothing to do, I repeat nothing to do with the 'real' problem some of the bikes have. The hesitation is negative character of all these bikes and can better be described as an outdated & crude throttle pick up compared to the likes of the newer RR's and ZX-6's.
A lot of riders think this the herky/jerky thing, but it's NOT. The real 'deal' is when you have a bike that intermittenly has a VERY on/off throttle not only at the very low revs, excessive engine vibration and a general lack of performance.

I am quite sure it is possible to smoothen the hesitation out somehow with different kind of fixes, but it will not solve anything for those with the serious issue....I have tried.

I have now put an Em Pro, full Akra and removed the STV's on my 07 750 race bike and in about a months time I'll be able to report if the issue has gone.
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Old 07-10-2008, 07:23 AM   #26 (permalink)
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I already fixed mine and others by adjusting the TPS. But what the hell do I know?
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Old 07-11-2008, 10:12 AM   #27 (permalink)
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Quote:
Originally Posted by steeltoe View Post
I already fixed mine and others by adjusting the TPS. But what the hell do I know?
Which TPS did you adjust and how far out of spec was it?
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Old 02-11-2009, 07:16 AM   #28 (permalink)
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Quick update on this, I keep meaning to report. A few months ago, I started playing around with when it acts up. (Quick recap, when it happens, it always bucks as if I'm chopping and opening the throttle hard, or as if someone is turning the kill switch on and off, and there is a rhythm to it if I just hold the throttle steady and let it keep doing it.)

So, then I decided to pull the clutch in while holding the throttle there, and what happens is the tach needle starts bouncing back and forth between 0 and 5 or 6k (or wherever the high point was to start with), to the same rhythm as the bucking before I pulled the clutch in, and it will keep doing that as long I have the clutch in and the throttle open and steady.

I've been able to do this several times. It's fascinating to watch. The engine never dies, it just acts crazy like that.

I need to get someone to disconnect the power commander so I can ride it around without it for a while and see if it still does it or not.
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Old 09-23-2009, 07:33 PM   #29 (permalink)
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I had the very pronounced jerky effect on my 07 gsxr 600. While trying to find the simplest solution, I removed my chain. There were a couple of areas where the chain was binding. It was binding so bad, that the chain at times would not follow the contour of the sprockets. Turns out that the chain was just stretched beyond specs and was binding on the bearings between the links. I changed the chain and the jerky effect was gone. This might explain the irregular events of occurance.

I have worked on honda civic race motors for a decade, and have learned that Japanese computers and engine controls are usually bullet proof. lets make sure we check our chains before handing over our money to these shops, whose business it is to sell us parts and services.
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Old 09-23-2009, 07:39 PM   #30 (permalink)
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I had the very pronounced jerky effect on my 07 gsxr 600. While trying to find the simplest solution, I removed my chain. There were a couple of areas where the chain was binding. It was binding so bad, that the chain at times would not follow the contour of the sprockets. Turns out that the chain was just stretched beyond specs and was binding on the bearings between the links. I changed the chain and the jerky effect was gone. This might explain the irregular events of occurance.

I have worked on honda civic race motors for a decade, and have learned that Japanese computers and engine controls are usually bullet proof. lets make sure we check our chains before handing over our money to these shops, whose business it is to sell us parts and services.
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