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1&2 head pipes cold?
- daveyg
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- Patton
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Could perform clear tube test to assure fuel level is within specs, as a too high fuel level may produce the reported symptoms.
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1973 Z1
KZ900 LTD
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- daveyg
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daveyg wrote: The plugs were not wet, but I did wonder about float height level, as #1 carb appeared to leak ever so slightly when on side stand....
A carb may leak for different reasons and from different locations, but I don't suspect float height level in #1 carb as being related to the mentioned leak.
Absence of gasoline on spark plugs in a non-combusting cylinder with satisfactory compression indicates failure of fuel mixture being drawn inside the combustion chamber from the carb.
Here's a link from KZr's FILEBASE to Keihin carb section:
www.kzrider.com/filebase/doc_download/47...-shop-manual-via-omr
If the carbs at hand are the style that are supposed to have a plug at the bottom of the pilot jet, the plug might be missing. And if missing, would prevent the pilot circuit from properly functioning.
And/or the small passage into the pilot jet may be clogged, as noted in this illustration:
Attachment withPilotJetPlugremoved.jpg not found
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1973 Z1
KZ900 LTD
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- daveyg
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daveyg wrote: The plugs I have are somewhat different than the ones in your pics though, they r plastic, with an o-ring. Should I replace all 4 with fresh o-rings for assurance that they plug properly?
If the o'rings look okay and seem to fit snugly, they're likely sealing all right.
Would concentrate on assuring carb spray cleaner flowing into the carb from the pilot circuit (as shown in the illustration), which would indicate that fuel mixture would also be drawn through the pilot circuit into the carb bore and sucked into the combustion chamber.
Good Fortune!
1973 Z1
KZ900 LTD
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