Carburetor air tube, where does it go?

In the Shed
1

Hi guys I’m new here, be gentle with me :slight_smile:
I’ve just bought a non running but very good condition 1985 VF1000f.
I now have it running and is rideable but is lacking power. One thing I have noticed there is a tube missing from the carbs ( see pic ) in the manual it says air tube, I can put a piece of hose on there all well and good but where does the other end go? Should there be vacuum on it, or is it just a drain or what? I can’t figure out where it should go to, I’ll try take an actual pic if the one from the manual doesn’t help




2

On mine, both those air pipes finish in the alloy bottom of the air box covered with an anodised shield…no pipe attached. Mine is 1985 vf1000fe.

3

84 model carbs air pipes fed back into the plenum as Previous post says.
85 models vent to the atmosphere,the F2 has a tube that runs back the frame just above the shock mount.
This allows air into the float bowl as required and prevents any vacuum being created which would cause a weak mixture.
Regards Bif

4

Thanks for your help guys, the pipe in question wasn’t the issue it was a blocked jet. Stripped and cleaned the carbs and now it runs great, in fact amazing for a 30 year old bike!

5

the carbrator air tube goes into the swing arm … if the air do not flow out, the gasoline do not go to the carburator … lack in power auotmaticcally :smiley: :smiley: :smiley: :smiley: