tank venting, sooprise!!

Art Lischer alisch80 at mchsi.com
Wed Aug 8 06:28:34 PDT 2007

Sorry for the repeat, lol. As I was writing I was thinking this was 
familiar.  Cutting them should not hurt as long as it is to get the ends 
into a zone of quiet air.  Had same problem with my new Nighthawk 700 
back in '85.  Then it just took zip tying the hoses to a different place 
behind the airbox.
Art in DM

Larry Zoia wrote:
>> Larry,
>> More than likely the carb bowl vent tube ends are in a spot where air is
>> rushing by and not allow in the bowls to vent properly.  Atmospheric air
>> pressure must be able to equalize with the space above the fuel level in
>> the bowls or fuel will not flow.
>> Moving your knees created a different air flow pattern around the bike.
>> Move the tube ends to a place that is not subject to air movement.
>> Problem should go away.
> Yeah, Art, I remember your ealier post.  I had a hard time wrapping my 
> mind around that idea as I didn't know
> exactly how they worked.  I figured that the siphoning effect might 
> actually help venting, but if the idea is to equalize pressure, that 
> makes more sense than the turbulence overcoming the intake at the carb 
> throats.
> Is there any problem with shortening the tubes?

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