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Running Lean
- Bullitt03737
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When I got these carbs on it was running just right, nice and tan. The only things that have changed are the Vacumn petcock is gone, and the emissions are gone. All the nipples are capped off. My airfilter is in correctly as well, maybe its plugged?
1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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- Bullitt03737
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It seems like an all of the sudden thing.
It dosent Pop, or run rough or anything like that, The motor just seems to get extremely hot copared to our police bike, and the plugs look like they have snow on them.
Im baffeled by whats goin on, and its across all four cylinders too, not just one.
1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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- bountyhunter
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I have figured out That the sparkplugs where white before the petcock, and before I changed my valve cover gasket.
It seems like an all of the sudden thing.
the plugs look like they have snow on them.
Im baffeled by whats goin on, and its across all four cylinders too, not just one.
I'd look for a vacuum leak, open vacuum port, cracked vacuum line, etc.
1979 KZ-750 Twin
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- pyxen
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84 KZ550-F2 LTD
93 ZR550-B4
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- NickW900LTD
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- Nick
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1976 KZ900 LTD (sold)
1977 KZ1000 LTD
1978 KZ1000 A2A
Pierceton, Indiana USA
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- Bullitt03737
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All of the vacumn nipples are capped off now, and it dosent act like its running lean at all, thats whats got me so confused.
There is varnished fuel on the outside of the Float bowl on the Number one carb. Not sure how that came about, Ive remember that meaning highspeed fuel starvation...
1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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- Bullitt03737
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1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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- bountyhunter
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Single Fuel line, and an inline fuel filter.
Make sure that filter has enough flow capability or it will starve the carbs and cause a lean condition.
1979 KZ-750 Twin
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- Bullitt03737
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www.z1enterprises.com/detail.aspx?ID=3289
Im sure it flows plenty. Now im wondering if the tank is venting properly. Fuel flows freely, but Could the higher demands of the open road be cuasing the fuel flow to slow?
1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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- wiredgeorge
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wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!
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- Bullitt03737
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As far as the plugs they are white, very white. Slightly rounded too. BS34 Carbs, Stock airbox, Stock exhuast. No Emissions stuff. Stock jets. Those nipples are capped off, the other two are as well. The bike seems to run WAY hotter than our police 1000. Thats what made me check out the plugs in the first place agian. When I first put the carbs on (got em from ebay) everything was perfect, nice and tan, ran at what I thought was a cool enough temp.
What really gets me is how the airfuel mixture is off, and the only thing that has changed is the petcock.
Now another tid bit that may help is when I intially start it up on full "choke" it dosent rev up real high, and drop as it warms and "choke" is removed. Also I have to constanly adjust the idle speed. When its cold it will be at 1K. After I ride it and warm it up real good it will move up to roughly 1500. So I turn it back down to a 1000 and will stay there till it cools off agian.
1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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- Bullitt03737
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1980 CSR 1000. New dyna Coils, Vacumn Less Petcock, Various Handle bars depending on the day, (Drag and Clubman.)
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