Rpms won't go higher than 8k - ZX6R Forum
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post #1 of 75 Old 07-16-2016, 11:06 AM Thread Starter
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Rpms won't go higher than 8k

I was in 4th/5th gear on the highway just now and the rpms wouldn't go past 8k. I've never been past that before, but this time i wanted to go a little more and rolled on the throttle and it stayed right there at 8? Any thoughts?
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post #2 of 75 Old 07-16-2016, 11:30 AM
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Does it rev past 8K when it is in neutral?
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post #3 of 75 Old 07-16-2016, 12:12 PM Thread Starter
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Originally Posted by Scorpi0 View Post
Does it rev past 8K when it is in neutral?
No. In neutral it stops at 8k as well
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post #4 of 75 Old 07-16-2016, 01:36 PM
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No power commander hooked up or anything? Anyone do an ECU flash?

2013 ZX-6R(20,XXX glorious miles )
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post #5 of 75 Old 07-16-2016, 01:46 PM Thread Starter
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Originally Posted by PinoyRider88 View Post
No power commander hooked up or anything? Anyone do an ECU flash?
It has a dynajet power commander III. See the photo. The seller said it may have reset to the low setting when he replaced the battery. How might I adjust this? Do I need the bike running and do the buttons that show low mid and high affect the rpm limit?
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post #6 of 75 Old 07-16-2016, 02:18 PM
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Check that fuel and vacuum lines are not kinked. You could check your fuel pump, but I don't have advice on how to do that. Also, make sure that Eddie Murphy didn't put a banana in your tailpipe.

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post #7 of 75 Old 07-16-2016, 07:59 PM
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Disconnect the power commander first. It could be the problem.
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post #8 of 75 Old 07-17-2016, 06:22 AM
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Quote:
Originally Posted by Scorpi0 View Post
Disconnect the power commander first. It could be the problem.
^This first

Then check for correct fueling, friend of mines had this issue cause of clogged secondary injectors.Bike had been sitting for a long time.
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post #9 of 75 Old 07-17-2016, 08:33 AM Thread Starter
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Originally Posted by Scorpi0 View Post
Disconnect the power commander first. It could be the problem.
I can do that. But I do have a full race yoshi exhaust. Not a slip on. Will the power commander being disconnected cause my bike to run lean??
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post #10 of 75 Old 07-17-2016, 09:12 AM
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No it wont do any damage in such a short amount of time.
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post #11 of 75 Old 07-17-2016, 01:43 PM Thread Starter
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Originally Posted by Scorpi0 View Post
No it wont do any damage in such a short amount of time.
So I just went out again and tested the rpms in all gears. Stops at 8k in all gears. I will disconnect the pc after the gym and give you an update. But does the pc plug into a laptop computer easily?
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post #12 of 75 Old 07-17-2016, 03:30 PM
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Does it reach 8 k normally and run at 8k normally once you are at that engine speed. Does it struggle to reach 8k and struggle to maintain it. Could be a weak fuel pump.

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post #13 of 75 Old 07-17-2016, 05:51 PM Thread Starter
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Does it reach 8 k normally and run at 8k normally once you are at that engine speed. Does it struggle to reach 8k and struggle to maintain it. Could be a weak fuel pump.
It would reach 8k rpm normally no problem and would stop at 8k and maintain it no problem. It was brought to my attention my kickstand sensor could be loose and the vibration at 8k could be tripping the sensor. So I checked and the sensor was definitely loose, tightened that, but dropped a bolt inside the bike while tearing it apart and looked everywhere for it. So I left the bike stripped down for the night. Gonna get back to it tomorrow. So I have not confirmed if the kickstand sensor is the issue or not.
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post #14 of 75 Old 07-17-2016, 06:43 PM
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Definitely not the kickstand sensor. Its a fuel issue.
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post #15 of 75 Old 07-20-2016, 08:44 AM Thread Starter
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Disconnect the power commander first. It could be the problem.
I took apart the bike and was able to disconnect the power commander clips from the injectors, so it is now disconnected. I had a matter come up and didn't have time to put the tank back on and start the bike. I'll be doing that tonight. The bike should be able to rev higher than 8k rpms in neutral, normally right?
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