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pre mature rev limiter?

This is a discussion on pre mature rev limiter? within the The ZX6R forums, part of the ZX6R Forum category; 1.) welcome 2.) pics? 3.) it looks like he solved his problem, you know, 3.5 yrs ago when this thread was made, have you tried ...

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Old 03-29-2013, 10:37 AM   #16
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1.) welcome
2.) pics?
3.) it looks like he solved his problem, you know, 3.5 yrs ago when this thread was made, have you tried what he did yet?
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Old 03-29-2013, 11:33 AM   #17
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Quote:
Originally Posted by PrestonK View Post
1.) welcome
2.) pics?
3.) it looks like he solved his problem, you know, 3.5 yrs ago when this thread was made, have you tried what he did yet?
Looks to me he used the SEARCH Function. Everyone gets ridiculed for not using it. Looks to me he did.
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Old 04-23-2013, 03:01 AM   #18
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same problem

i have a 2008 ZX6R and i am having the same problem it wont let me go above 8000 RPMS can anyone help
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Old 01-13-2014, 06:11 PM   #19
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Hello, i have a 2008 zx6r, also same problem, occured after changing out brand new battery. My question is the fix to the problem, was all solved while in motion, how did this solve the problem. If i could get more details it would be greatly appreciated. Thank you
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Old 01-14-2014, 11:11 AM   #20
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Here is the solution. Its one of two problems.

1.) Drop your fuel tank, and pull the pump, take apart pump, and clean EVERYTHING. Tank insides, pump, filter, etc. Reassemble. I'm almost positive this is your problem. Had the very same thing happen to me on my 2007. Good way to find out for sure is buy a can of Sea-Foam, add it per the directions on the bottle to a tank of gas. If there is ANY improvement, then you have a clogged pump/filter and a dirty fuel tank. Get to cleaning!

2.) Faulty side stand switch. The side stand switches are known to go bad. When they do they tend to resonate right around 8k on the tach. What happens is the vibrations from the bike cut the circuit in and out, which in turn tricks the bike into thinking the stand is down and cuts fuel delivery. Once the vibrations slows or stops because of the fuel cut off the switch tells the bike the side stand is up and resumes fuel delivery. Well it does this extremely rapidly and gives the effect of a "rev limiter."

And easy way to diagnose this is to cut (Yes I said CUT) the wires running to the side stand switch and then bridge those wires TOGETHER. If the bikes runs fine after your do this, then your switch is the problem. $20-$30 on Ebay. *WARNING* Bridging those wires together tricks your bike in to thinking the side stand is up. DO NOT ride off with the side stand down, one left hand turn and you are going to meet the pavement....hard.

Try #1 first as I' am almost 99.99999999% certain that is your problem.
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Last edited by Raven; 01-14-2014 at 11:14 AM.
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Old 03-31-2014, 05:58 PM   #21
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Quote:
Originally Posted by Raven View Post
Here is the solution. Its one of two problems.

1.) Drop your fuel tank, and pull the pump, take apart pump, and clean EVERYTHING. Tank insides, pump, filter, etc. Reassemble. I'm almost positive this is your problem. Had the very same thing happen to me on my 2007. Good way to find out for sure is buy a can of Sea-Foam, add it per the directions on the bottle to a tank of gas. If there is ANY improvement, then you have a clogged pump/filter and a dirty fuel tank. Get to cleaning!

2.) Faulty side stand switch. The side stand switches are known to go bad. When they do they tend to resonate right around 8k on the tach. What happens is the vibrations from the bike cut the circuit in and out, which in turn tricks the bike into thinking the stand is down and cuts fuel delivery. Once the vibrations slows or stops because of the fuel cut off the switch tells the bike the side stand is up and resumes fuel delivery. Well it does this extremely rapidly and gives the effect of a "rev limiter."

And easy way to diagnose this is to cut (Yes I said CUT) the wires running to the side stand switch and then bridge those wires TOGETHER. If the bikes runs fine after your do this, then your switch is the problem. $20-$30 on Ebay. *WARNING* Bridging those wires together tricks your bike in to thinking the side stand is up. DO NOT ride off with the side stand down, one left hand turn and you are going to meet the pavement....hard.

Try #1 first as I' am almost 99.99999999% certain that is your problem.
Howdy. First post

Just picked up an 08zx6r and I noticed it doing this same problem...more so around 9k for me. I tried revving in neutral and I can go all the way up...it's only when riding. I used google search to find this thread btw

The previous owner told me about this problem as he had it as well. He took it to the shop and they replaced the valve covers b/c he had a leak and also gave the bike a tune up. I have the receipt documenting this. Well, sure enough, I buy the bike and the problem comes back

My questions is how hard is fix #1 to do? I'm new to the bike world as of last year. I'm slowly learning how to modify cars (2013 VW GTI), and don't really plan on modifying my bike...just want a nice stock zed-x to ride on weekends. I'm tempted to just take it to a shop for the peace of mind but if #1 is easy to do it would be worth a shot to save some bucks.
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Old 03-31-2014, 06:26 PM   #22
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The side stand switch is a common problem. You can test it by bridging the two sides together. Sends signal to ECU telling it the side stand is up. Another possibility if you are experiencing surging near 8 or 10k, it's a clogged fuel pump. You can test that by trying some injector cleaner. If you notice improvement even slightly would point to fuel delivery issue. Open up your gas tank and look inside (with a flashlight please). Any rust, gunk, floaties,etc?

Last edited by Raven; 03-31-2014 at 06:29 PM.
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Old 03-31-2014, 06:29 PM   #23
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Quote:
Originally Posted by Raven View Post
The side stand switch is a common problem. You can test it by bridging the two sides together. Sends signal to ECU telling it the side stand is up. Another possibility if you are experiencing surging near 8 or 10k, it's a clogged fuel pump. You can test that by trying some injector cleaner. If you notice improvement even slightly would point yo furl delivery issue. Open up your gas tank and look inside (with a flashlight please). Any rust, gunk, floaties,etc?
Thanks, man. I will check this out tomorrow! What part of Michigan are you from? My g/f lives in St. Joe and we just met 1/2 way in Niles today. I rode my zx6r up and she rode her new '13 650r up.
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Old 03-31-2014, 06:36 PM   #24
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I had a similar problem but it was cutting at 12k or so.... Over the winter I synced my tbs and that seemed to fix it.
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Old 03-31-2014, 06:45 PM   #25
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synced my tbs
New to the bike world so not familiar with what that is. I've been focusing on my GTI so much that my mind immediately thought "Turbo-back-system" haha.
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Old 03-31-2014, 07:00 PM   #26
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I had this same issue on my bike, it was a bad fuel pump,(bike cant supply enough fuel at higher revs, worse the pump = lower revs) dont bother cleaning just spend the cash and get a new oem pump, its the best option , if you buy the replacement pumps off ebay it wont help because of the crap thats stuck in the rest of the pump parts, i learned this the hard way, any easy way to make sure first is to test the pump, first check the flow rate ,its easy and all you need is a small measuring cup, check the manual for details or pm me for details, then check pressure with the correct tool, can be "borrowed" from local autozone type shops. But be ware just because pressure is good dosnt mean flow rate is , and check and re check your servvice manuals for specific directions for these .
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Old 03-31-2014, 07:14 PM   #27
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They have pills for that
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Old 03-31-2014, 07:30 PM   #28
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Quote:
Originally Posted by 636MOBIN View Post
I had this same issue on my bike, it was a bad fuel pump,(bike cant supply enough fuel at higher revs, worse the pump = lower revs) dont bother cleaning just spend the cash and get a new oem pump, its the best option , if you buy the replacement pumps off ebay it wont help because of the crap thats stuck in the rest of the pump parts, i learned this the hard way, any easy way to make sure first is to test the pump, first check the flow rate ,its easy and all you need is a small measuring cup, check the manual for details or pm me for details, then check pressure with the correct tool, can be "borrowed" from local autozone type shops. But be ware just because pressure is good dosnt mean flow rate is , and check and re check your servvice manuals for specific directions for these .
Are service manuals available in pdf download? Previous owner didn't have the manuals to go with the bike when I bought it...
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Old 03-31-2014, 07:32 PM   #29
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They have pills for that
?......... A SWING AND A MISS.
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Old 03-31-2014, 07:33 PM   #30
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are service manuals available in pdf download? Previous owner didn't have the manuals to go with the bike when i bought it...
yeah somewhere on this site actually, its where i got mine
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