Help yet again.... ;( - Kawasaki ZX-10R.net
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post #1 of 14 Old 06-30-2012, 08:14 AM Thread Starter
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Help yet again.... ;(

Question... my bike was breaking down and red lite flashin Fi, so I got someone to take a look at it and they said it was code 63 and that the servo is bad, so he made the same thing that Hellrazor makes on the site and put it in and bike seemed fine. Now when she heats up and you rev her anywhere over 6000rpms she will fall flat on her face, no power and she will skip, but as soon as she goes below 6000 rpms, she is fine just when you have to work the bike harder she will skip just for a second almost feel like someone pulled in clutch half way. I tried ridin it hard up to 10,000rpm and good lord you better be holdin on she will buck, skippin and jumpin.

I just had plugs changed and have heard everything from maybe a bad plug or a coils and bad gas, to me that doesnt sound right cause if it was the plugs or coil wouldnt it do it all the time and also changed the gas in her just incase it was bad gas, she runs perfect just above 6000rpms she starts acting up.

So I have heard about the butterflies...how do I check to see if they are staying open? If someone has done there on a second gen please explain to me what you did.

Or if anyone else have had this problem, what was causing it?

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Last edited by red636girl; 06-30-2012 at 08:16 AM.
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post #2 of 14 Old 06-30-2012, 08:32 AM
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Well, if I had to bet, I'd say that you have a pinched fuel line from when the tank was reinstalled. The exhaust servo wouldn't be the cause, neither is the Hellsrazor eliminator. Neither are a performance thing. The plugs/coils could be an issue, but I doubt it. Especially if you're hitting a specific rpm with no issue. I think the fuel line is pinched or kinked under the tank causing slight fuel starvation at the higher range. Lift the tank, check the routing, and be sure when you set the tank back down you don't crush the lines.

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post #3 of 14 Old 06-30-2012, 10:07 AM
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If its not a pinched fuel line... TB's are gone...

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post #4 of 14 Old 06-30-2012, 10:33 AM
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Sounds like your fuel pump is taking a crap, once it get over 6000 rpm its no longer able to flow enough fuel to keep up.

It won't be your butterflies in the exhaust, once you remove the cables from the servo, Gould butterflies always stay open.


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post #5 of 14 Old 06-30-2012, 10:51 AM
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Is it 6000rpm regardless in which gear you are, or how hard you are on the throttle? The reason I ask is that the engine load would be different in different gear and under different acceleration, and so if it was a fuel flow issue, I'd expect to see a difference in what rpm the problem starts happening at.
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post #6 of 14 Old 06-30-2012, 11:05 AM
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From experience with friend bike sound like a pinched fuel line.

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post #7 of 14 Old 06-30-2012, 12:49 PM
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I doubt the fuel pump... I just went through this, changed fuel pump and bike still surged, changed tB's all worked fine... If u can swap them with another bike do so and if it's the problem, buy several sets as backup..

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post #8 of 14 Old 06-30-2012, 12:52 PM
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Quote:
Originally Posted by 06blackpearl View Post
If its not a pinched fuel line... TB's are gone...
Ive racked my brain and Im sure Ill do a face palm when you tell me but what are TB's??

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post #9 of 14 Old 06-30-2012, 01:14 PM
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post #10 of 14 Old 06-30-2012, 02:10 PM
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What failed on your throttle bodies?


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