Leaky carbs

  • OregonMatt
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Leaky carbs

04 Jun 2011 18:55
#455424
Is there some vacuum line on the BS34's that keep them from overflowing? I have been helping some guys get an '81 kz1000 ready for Bonniville and we have had a hell of a time getting the carbs to stop leaking. The float heights were set and they are still leaking like crazy. all the vacuum lines were removed and I was wondering if that had anything to do with it. as usual, and help is greatly appreciated.
1976 kz 900

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  • 650ed
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Re: Leaky carbs

04 Jun 2011 19:00
#455426
Did you clean the float valves? Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • OregonMatt
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Re: Leaky carbs

04 Jun 2011 20:21
#455441
yes the entire set has been cleaned twice
1976 kz 900

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  • peter1958
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Re: Leaky carbs

04 Jun 2011 20:32
#455442
but after you cleaned them did you put a filter between the tank and carbs

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  • 82HONDASAKI
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Re: Leaky carbs

04 Jun 2011 21:58
#455478
I AM HAVING THE SAME ISSUE, MINE IS LEAKING BACK THROUGH THE #1 CARB. I AM INEXPERIENCED IN THE MOTORCYCLE FIELD AND HAVE EVER MESSED WITH CARBS. I WAS TOLD TO REPLACE THE NEEDLE AND FLOAT, LIKE THE KITS FOUND ON EBAY FOR 9$, DO I JUST DROP THE BOWL OUT OF THE BOTOM, REMOVE THE SCREW SECURING THE BRACKET HOLDING THE NEEDLE IN PLACE, DROP THE ASSEMBLY OUT AND REPLACE IT? IS IT THAT SIMPLE? MY ISSUE IS IT LEAKING OUT THAT CARB THROUGH THE AIR BOX HOSE, ONTO THE SIDE COVER, AND FILLING MY AIR BOX.
THANKS IN ADVANCE
-COREY

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Re: Leaky carbs

05 Jun 2011 12:57
#455602
yep, sure did
1976 kz 900

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  • 650ed
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Re: Leaky carbs

05 Jun 2011 13:48
#455605
I don't think you can correctly set the float heights with the clear tube method if the float valves are leaking and allowing fuel to fill the carb bowls to the overflow level. So, if you were able to set the float height using the clear tube method the fuel must be leaking below the overflow level. If that is the case, I would check the overflow tube inside the carb bowl to see if it's cracked. You can remove the carb bowl and fill it with fuel up to just below the overflow level and see if it leaks through the overflow tube.

If you set the float heights using anything other than the clear tube method I would suspect they are set too high. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • 82HONDASAKI
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Re: Leaky carbs

09 Jun 2011 12:59
#456317
CAN SOMEBODY ANSWER MY QUESTION? I COULD USE THE HELP SO I CAN GET MY KZ BACK ON THE ROAD.
THANKS

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  • gd4now
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Re: Leaky carbs

09 Jun 2011 14:09
#456328
Check the overflow tubes for cracks - if they are then the carb will leak fuel via the overflow no matter what float level you set.
1977 KZ650 B1
Pods and Denco header


OLD KAW OWNERS SMILE ALOT

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  • 650ed
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Re: Leaky carbs

09 Jun 2011 15:14 - 09 Jun 2011 15:15
#456335
82HONDASAKI wrote: CAN SOMEBODY ANSWER MY QUESTION? I COULD USE THE HELP SO I CAN GET MY KZ BACK ON THE ROAD.
THANKS

I would, but I don't know what model '82 Honda you have. B) Ed

And PLEASE STOP SHOUTING.
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 09 Jun 2011 15:15 by 650ed.

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  • 82HONDASAKI
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Re: Leaky carbs

09 Jun 2011 15:15
#456336
ARE THESE THE HOSES COMING FROM THE BOTTOM OF THE CARB BOWLS?

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  • 82HONDASAKI
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Re: Leaky carbs

09 Jun 2011 15:16
#456337
ITS AN 82 KZ1100 A2

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