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Carburetor vacuum hose?

Discussion in 'CV Performance' started by bg3075, Sep 24, 2015.

  1. bg3075

    bg3075 Active Member

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    I bought a new Harley Davidson Performance 40mm CV Carburetor for my 2006 XL1200R. I wanted to replace the vacuum hose as well (that which goes from under the left side of the tank, just behind the fuel hose, to the carburetor. I called my local H-D dealer and asked to order it. The parts salesman said that hose is now obsolete. I noticed the new carburetor I got in has a plastic cap covering the vacuum port inlet. Shall I leave it, and just take the vacuum hose off now? Will this work? Does it really need the vacuum hose?
  2. hotroadking

    hotroadking Super Moderator Staff Member

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    Yes unless you change the petcock to a gravity fed like a pingle

    The stock HD petcock requires a vac line or it won't flow

    Just go to an auto parts store and get some vac line hose and cut it to length and you will be fine

    Sent from my iPhone using Tapatalk
  3. bg3075

    bg3075 Active Member

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    Got it, hotroadking. Thanks.
  4. bg3075

    bg3075 Active Member

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    The old vacuum hose fit on a new carburetor vacuum port that I bought. It first didn't appear that it would, was the same port as on the old carb, but fit. I believe the new carb did the trick. Thanks.
  5. hotroadking

    hotroadking Super Moderator Staff Member

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    Glad to hear

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