CBR 600F 1987 - 1990 CBR 600F Forum

1993 CBR600F leaking fuel

Old Oct 28, 2022 | 10:00 AM
  #1  
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From: kawkawlin mi
Default 1993 CBR600F leaking fuel

leaking fuel from carbs on the back side not sure if it’s coming from the t or the bowl. drains
 
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Old Oct 28, 2022 | 01:27 PM
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Hi and welcome!

Best to clean everything up and shine strong light underneath to take look. You can get fluorescent dye that'll help you detect where new leaks starts from clean carbs.

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Most likely it's coming out of vent-tube because of 2 issues:

1. leaking petcock that doesn't shut off flow when bike is off
2. leaking float-valves in carbs that doesn't shut off flow when bowls fill up.

BOTH of these have to be present. Either one by themselves won't cause leaking out vent-hose because it would stop flow.
 
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Old Oct 28, 2022 | 02:36 PM
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From: kawkawlin mi
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well you are right on that i have a bunch of stuff bypassed it looks like i had one tube hooked up to the carb from the vent tube on the gas tank. i’m new to this bike well bikes in general i also got a 95 suzuki katana 600f and it’s pretty much the same situation as this one i have most of the parts but i’ve been finding out i’m missing quite a few… speaking of i could use the cover of this airbox i don’t have just the top but i have everything else filter mount and Centerpiece
 
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Old Oct 28, 2022 | 04:08 PM
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You can get parts for old bikes pretty easily off eBay:
https://www.ebay.com/itm/312577949308

I don't think there's any connection between tank & carbs. Just from petcock to carbs. You can figure out hose-routing from online-parts places:
https://www.cmsnl.com/honda-cbr600f2...l#.Y1xPWFVKhR0


Also sticker on airbox:
 

Last edited by dannoxyz; Oct 28, 2022 at 04:53 PM.
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Old Oct 30, 2022 | 09:32 AM
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From: kawkawlin mi
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this is how it was leaking with the peckock on and trying to roll it over to start it would roll but not start and leak

i don’t have the parts circled in red
 
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Old Oct 30, 2022 | 05:48 PM
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Those are only on CA models. Hoses on your bike won't have T fitting.

Petcock leaking externally is bad seals. Get rebuild kit to fix
 
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