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The BIGGEST hesitation I have ever experienced
- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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- trianglelaguna
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No, Please read the other posts. Idle circuits cleaned and tested.
thanks
Ken
1976 KZ900
2003 ZX12R
2007 FZ1000
2004 ninja 250R for wife
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- TeK9iNe
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- What did you do!?!
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To nads and every one else who responded with there suggestions and with offers of help, I would like to thank all of you.
Not having any pilot jets at hand, I took out my old set of jet drill I've had since the 60's and took a stab at resizing the stock 17.5 pilots and drilled them out to .030". I reassembled the carbs and installed them on the engine.
With fingers crossed and fuel and full choke on I hit the starter. Heaven!! started on the first little pressure put on the button and happily idled at about 2000 rpm cold. I shut off the choke as soon as the rpm started to rise and she then dropped to a steady 1200rbm idle. A little turn on the idle adjuster an she was now happily purring along at 900 rpm.
I pushed the bike out side for the real test. Having never making it past my mail box before either stalling or needing to slip the clutch at 5000 rpm to keep from bogging out, away I went. This time she accelerated away as sweet as can be. I only did a short five mile loop as the temperature here was in the mid 20 degs Fahrenheit.
So for so very good. When the tempature comes up into the 30s I will try a longer loop to see if getting the engine hotter causes any need for further adjustments, but for now I'm very VERY happy with the performance I have. So happy that today I made arrangements with my painter do repaint all the fiberglass body work.
Once again thanks for the great response from this group
Ken Smith
Drilled them out to .030, I'm not sure what jet that corresponds to, maybe a thirty, but that has got to be too rich.
When you quickly flick the throttle, does it return exactly to its previous idle, or drop down slightly below. WHEN HOT - After 10 min ride. Everything should be tuned hot. Its got to be too rich.
I'm happy for you, but I think you should try to dial it in a little closer with the mixture screw tuning method I mentioned above. Or eith new jets... :huh:
my 2 cents.
Cheers.
Motorcycle Shop Owner/Operator
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors
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- TeK9iNe
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i did read the other posts,,,i still think somthing is clogged...not accusing...just my 2 cents....good luckindianken wrote:
No, Please read the other posts. Idle circuits cleaned and tested.
thanks
Ken
Hey trianglelaguna, can you explain why you think something is clogged?
What experience/knowledge makes you think that?
It could be, but what happened to you that leads you to determine this?
Curious!
Motorcycle Shop Owner/Operator
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors
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- b.tracy79kz
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- Patton
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...took a stab at resizing the stock 17.5 pilots and drilled them out to .030"...full choke on...started on the first little pressure put on the button and happily idled at about 2000 rpm cold. I shut off the choke as soon as the rpm started to rise and she then dropped to a steady 1200rbm idle. A little turn on the idle adjuster an she was now happily purring along at 900 rpm... accelerated away as sweet as can be...did a short five mile loop....
In reviewing this thread, see nothing about the float bowl fuel levels having been checked by performing the clear tube test.
Too low fuel levels could cause the reported symptoms. And if raised to specs, might have prevented any need to drill out the pilot jets in order to overcome a fuel deficit caused by too low fuel levels.
Good Fortune!
1973 Z1
KZ900 LTD
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