having issues with my 07 - Kawasaki ZX-10R.net
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post #1 of 24 Old 08-31-2015, 03:25 PM Thread Starter
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having issues with my 07

In the past couple of days my 07 has been acting up. Doesn't want to idle, keep having to adjust it. When pulling the clutch in it dies sometimes if i don't rev it a little to catch it.

Fast forward to this morning. Start it to go to work. Headlights were aimed at the house and I noticed a slight bright, dim, bright, dim pattern. Drove to work no issues. On my way home it was about 90* outside. Sitting at a light bike was sitting at 207*. Started idling erratic and died. Noticed a puff of smoke from the left fork area. Didn't really want to start but I revved it and got going. parked at home, seemed to idle fine. Pulled the plastic cover off by the fork and made sure nothing was burnt or messed up on my wiring. Looked fine.

My guess is, the stator or rectifier is starting to take a shit. Probably looses voltage at idle, fuel pump slows down and she idles bad or dies. Stator and rectifier is about $300. Really hoping to make a track day on oct 6... kind of a bummer.

Any ideas/suggestions?

P.S. the bike is coming up on 13k miles. All original electronics. Also has power commander 3.

Thanks, Millhouse

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post #2 of 24 Old 08-31-2015, 03:33 PM
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Start with the battery first and load test it. If its good then it could be stator/rectifer. It could also be your efi unplug the power commander and see if the problem persists.
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post #3 of 24 Old 08-31-2015, 03:53 PM
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It would seem that it's a voltage issue. If the charging system craps out, the bike will run completely off the battery, but only for a limited time. The first place to look is the alternator. It's highly likely you don't need both the rectifier and stator. Troubleshoot the problem and figure out what you need.

The temperature is normal, so forget about that.

But the erratic idle should be looked at as well. How erratic? What's the variation from peak to trough? It should be idling around 1150rpm so if it's dropping below that a significant amount, that's likely why the lights are dimming.

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post #4 of 24 Old 08-31-2015, 04:09 PM Thread Starter
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Quote:
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Start with the battery first and load test it. If its good then it could be stator/rectifer. It could also be your efi unplug the power commander and see if the problem persists.
Battery is brand new yuasa just bought it 2 months ago. Could still be bad I suppose but unlikely. I will test the stator and rectifier first then try the powercommander if those check out.

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It would seem that it's a voltage issue. If the charging system craps out, the bike will run completely off the battery, but only for a limited time. The first place to look is the alternator. It's highly likely you don't need both the rectifier and stator. Troubleshoot the problem and figure out what you need.

The temperature is normal, so forget about that.

But the erratic idle should be looked at as well. How erratic? What's the variation from peak to trough? It should be idling around 1150rpm so if it's dropping below that a significant amount, that's likely why the lights are dimming.
I usually set it to idle around 1500. It will stay right there for a while then it with bounce between 1500 and 1000 for a few seconds and die. Or Ill set it at 1500, next time I stop its at 1000, next time 1250, and I keep adjusting it back to 1500 but it won't stay there. The reason I have it idle a little high is because if I set it to 1100 it stalls when I pull the clutch in and chop the throttle.

I need to find the "how to" on testing each one and check it out. Thanks for the quick replies fellas

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post #5 of 24 Old 08-31-2015, 04:13 PM
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I usually set it to idle around 1500. It will stay right there for a while then it with bounce between 1500 and 1000 for a few seconds and die. Or Ill set it at 1500, next time I stop its at 1000, next time 1250, and I keep adjusting it back to 1500 but it won't stay there. The reason I have it idle a little high is because if I set it to 1100 it stalls when I pull the clutch in and chop the throttle.

I need to find the "how to" on testing each one and check it out. Thanks for the quick replies fellas
The idle should not be that high and shouldn't vary that much. You've got issues there that you need to get fixed as well. Just increasing the idle speed because it dies isn't a solution. It should idle stable at around 1100-1200rpm after it's warm. It could be a vacuum leak, faulty injectors, fuel pump/filter issue, etc. But that should be resolved as well.

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post #6 of 24 Old 08-31-2015, 04:47 PM
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check your map sensor, ecu uses map sensor for idle and low load/low rpm operation. Also tbs out of sync would make your idle vary as well. Check all 4 cyl with a vacuum gauge.

Failed charging system can either stop charging or produce high voltage and that will fry most of the electronics. I'd have that tested and fixed before you get your idle issue taken care off.
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post #7 of 24 Old 08-31-2015, 05:07 PM Thread Starter
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I never had an idle problem until two days ago. I could let it idle for days if I wanted and it wouldn't jump around or stall. I had the idle set a little high before just because on the rare occasion if I wound it up to 8-9k or higher and just pulled the clutch in and chopped the throttle it would not catch it and stall. The varying idle speed and stalling from idle just started a couple days ago. It runs fine everywhere else in the rpm range.

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Last edited by Millhouse; 08-31-2015 at 05:09 PM.
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post #8 of 24 Old 08-31-2015, 05:42 PM Thread Starter
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Im going to test the stator and rectifier. Ill post back when I have more info.

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post #9 of 24 Old 08-31-2015, 06:20 PM Thread Starter
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Just tested the stator. Manual says 60V+ above 4k rpms. I took it to 4500 and never got more than a 29V read and nearly nothing at idle.
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post #10 of 24 Old 08-31-2015, 07:12 PM Thread Starter
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Heres a pic of the stator. Has some burnt wires. Which replacement is supposed to be the best?
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