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Thread: Possible MisFire?

Created on: 05/01/12 11:36 PM

Replies: 12

Trc


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Location: Nebraska

Joined: 12/20/11

Posts: 223

Possible MisFire?
05/01/12 11:36 PM

My bike sounds like it has a miss during idle. Could it have a miss? It has 1013k on it.



If you weren't there for my struggles, don't expect to be here for my success.

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Grn14


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Location: Montana

Joined: 02/25/09

Posts: 15511

RE: Possible MisFire?
05/01/12 11:40 PM

What's your fuel mileage like?And how 'bad' is this 'miss'?

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Rook


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Joined: 03/28/09

Posts: 20590

RE: Possible MisFire?
05/01/12 11:55 PM

My gen 1 sounds like it misses a beat at idle. It is not rough idling, its just not a regular beat 100% of the time. It is the normal way it idles. duma-duma-duma-duma-dum-bada-dum-bada-dum-duma-duma-duma.... if that helps at all a while back, Kruz also said his does this.



'08 MIDNIGHT SAPPHIRE BLUE Now Deceased

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Grn14


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Location: Montana

Joined: 02/25/09

Posts: 15511

RE: Possible MisFire?
05/01/12 11:57 PM

I have always wondered why the engine does that.Seriously.I know what you all are saying....it does sound like a miss....only at idle.Anyone know what it is?I could 'guess' it may be mapping,or timing,or both at idle....IDK.It's a teensy blip...ya....I stopped worrying about it...It never was 'noticeable' enough to get worried about.I have a very smooth idling engine right now.Seems to be fine.I wouldn't even notice it if I wasn't tuned in for it...like most of us.Probably nothing TRC....maybe call Kawasaki USA in Irvine,Ca and ask their guy there?He's helped me a few times with questions.Good question BTW.


* Last updated by: Grn14 on 5/2/2012 @ 12:08 AM *

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Hub


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Joined: 02/05/09

Posts: 13719

RE: Possible MisFire?
05/02/12 1:17 AM

Video the idle. Blip it, but try not to go over 200 rpm, but blip it less in rpm. Let it come back to idle. With your ears, you hear it, then set the camera's audio near it. It's either PAIR or sync, or the auto-idle unit. Pin the tail on the donkey without some sounds.



Tormenting the motorcycling community one post at a time

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Fowvay


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Location: Georgia, USA

Joined: 12/17/11

Posts: 217

RE: Possible MisFire?
05/02/12 4:11 AM

My bike lopes a bit at idle. I attribute that to the high performance nature of the engine.

I do get a slight hunting of idle speed which makes me curious.

I recently did a satisfaction survey with Kawasaki and I mentioned these characteristic in the survey.



2012 ZX-14R Green

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Trc


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Location: Nebraska

Joined: 12/20/11

Posts: 223

RE: Possible MisFire?
05/02/12 8:57 AM

I'm getting excellent millage. I would explain it as a cam lope/miss I'm confident it's nothing now to other guys saying the same thing.



If you weren't there for my struggles, don't expect to be here for my success.

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Hub


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Joined: 02/05/09

Posts: 13719

RE: Possible MisFire?
05/02/12 9:05 AM

Until I get mine to refine the tune, this sounds like the auto-idle system. Lots of hunt if one cylinder is more efficient than say another. Then, it could be the air screws if they apply. See any air screws under the throttle body like old style 14?

First, get this out of the way. Take a small mirror and start looking under the body. That is one variable to the no idle cable anymore.



Tormenting the motorcycling community one post at a time

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Hub


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Joined: 02/05/09

Posts: 13719

RE: Possible MisFire?
05/02/12 9:06 AM

Trc, within minutes between our posts, I more agree with you on that scenario. Gotta have an ear for this.



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Grn14


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Location: Montana

Joined: 02/25/09

Posts: 15511

RE: Possible MisFire?
05/02/12 9:21 AM

There is an idle screw adjuster.....set at the factory....some guys already messed with it...I wouldn't advise it....remember as Fowvay said...the engine has been reingineered with more 'agressive' cams.There could be several possible simple reasons why our motors are idling like they do.There are times when mine stays dead on rpm at idle...most of the time actually.HOWEVER.....at certain times...the idle will 'barely' hunt for a millisecond or two....maybe a couple of times during a one minute idle time.I would say...could be temps...maybe fuel quality....ambient temps?IDK.Fuel quality is iffy at best...who knows what's in that underground fuel tank we're going to?I mean...really...you don't know.A bit of water....who knows?Mine's doing okay...99 percent of the time...she's idling very smooth.It did this from day one...the idle thing.I'm not positive cause I haven't read up on it in the manual much..but isn't our idles on this new bike vacuum related someway?And there's a valve that controls the idle rpms?I think so.There's some sort of 'sensor' I think going to that valve...maybe that's all it is...vacuum pressure fluctuating.The motor IS a new design.


* Last updated by: Grn14 on 5/2/2012 @ 9:25 AM *

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One4R


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Location: Area 51

Joined: 04/01/12

Posts: 10

RE: Possible MisFire?
05/07/12 10:07 PM

Really didn't notice it until after I installed CT Duals and a PC5. But this thing sounds like a cammy mutha. It reminds me of a small block chevy V8 when it's sitting at a light. I think it's the nature of the beast.



"Buy the ticket, take The Ride." -HST.
'12 ZX-14R. Metallic Spark. Full CT duals, PC5, Brock's Pump Track map, Muzzy Bonneville Box, Muzzy fender eliminator,Heli-Risers. Redline Oils, Water Wetter, Shell 89, Meguiar's, NeverDull

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Rook


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Joined: 03/28/09

Posts: 20590

RE: Possible MisFire?
05/08/12 1:13 AM

But this thing sounds like a cammy mutha. It reminds me of a small block chevy V8 when it's sitting at a light.

Yeah. Cool, hey? I love it.



'08 MIDNIGHT SAPPHIRE BLUE Now Deceased

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Jagman


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Joined: 01/07/12

Posts: 295

RE: Possible MisFire?
05/08/12 8:04 AM

[quoteReally didn't notice it until after I installed CT Duals and a PC5.][/quote]

Waiting to recieve my back ordered CT Duals along with PC5 and Street Map. Any issues with low speed/RPM hunting or surging with your current map? Overall how's your experience with your CT/Street map setup? I believe Brock has a "new" Street Map available to address ssid issues.

Did you recieve a new street map Grn? I know this was one of the issues you had when you had your system on you bike. Ever decide to reinstall your kit?



2012 BMW S1000RR
2012 BMW K1600GT
2012 Honda CBR1000RR
2012 Kawasaki ZX-14R (Gone but never forgotten)

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