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Hanging idle
- DurbinCR
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1983 GPZ 750 A1 Unitrack
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- GPzMOD750
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- SWest
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- 10 22 2014
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Steve
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- ayeckley
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1976 KZ900A4
1976 KZ900A4
1978 KZ1000A2
1983 ZX750 A1 aka GPz 750
1983 ZX750 A1
1973 CL350K4
1984 ZX1100 A2 aka GPz1100
1969 CT90
2006 Burgman 400
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- Nessism
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- GPzMOD750
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That would bog it down. If you have a buggered up or bent needle it might not be dropping down into the jet fully. The slides might be sticking as well.ayeckley wrote: Pinhole in a diaphragm maybe? I'm currently suspecting that with my 1983 GPz; brand new boots and passes the propane test, but idle shoots up to 4000 RPM randomly.
Or like Steve said the advancer isn't returning to idle position.
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- DurbinCR
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Personally I'm still leaning towards it being a vacuum leak I'm not picking up. I know one of my clamps is kinda fouled up. Thanks for the information, if anyone has anymore ideas keep them coming.
Oh and I don't think I have any kind of mechanical timing advance, I'm pretty sure it's all digital on the unitrack bikes.
1983 GPZ 750 A1 Unitrack
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- DurbinCR
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1983 GPZ 750 A1 Unitrack
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- ayeckley
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1976 KZ900A4
1976 KZ900A4
1978 KZ1000A2
1983 ZX750 A1 aka GPz 750
1983 ZX750 A1
1973 CL350K4
1984 ZX1100 A2 aka GPz1100
1969 CT90
2006 Burgman 400
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- ayeckley
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1976 KZ900A4
1976 KZ900A4
1978 KZ1000A2
1983 ZX750 A1 aka GPz 750
1983 ZX750 A1
1973 CL350K4
1984 ZX1100 A2 aka GPz1100
1969 CT90
2006 Burgman 400
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- baldy110
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- DurbinCR
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baldy110 wrote: Did it do this prior to the working on the carbs and have you ever had it running good?
When I got it last summer it ran but never really wanted to idle. Turned out 2 of the vacuum ports were just open on the carbs. I spent all winter taking it apart and cleaning it up. Now that I have it back together it runs much better overall except for this hanging rpm issue
1983 GPZ 750 A1 Unitrack
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