Carb jetting

Discussion in 'Engine, Fuel and Exhaust' started by rgoot01, Nov 27, 2012.

  1. rgoot01

    rgoot01 Member

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    I was wondering if I could maybe get some advice regarding jetting. I live at 7000 ft and notice that my plugs are constantly dry fouling. Now I know that stop and go traffic will cause this and certain riding situations can cause this also. With that said stop and go traffic is not a factor since I live in a town of 5500 and only three stop lights. I have a cv carb on it and it is an '89 elctra glide. The main is 175 and the pilot 45. What direction do I want to go to get it to lean it up some and which jet or both do I need to replace?

    I know that from bike to bike there are variables that will allow the jet sizes to vary from one carb to the next, but can someone living at a similiar elevation point me in the right direction.

    Thanks,
    Robert
     
  2. tourbox

    tourbox Senior Member

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    Do you have any Mods to exh.,a/c,cam, etc.? More info can help.
    tourbox
     
  3. rgoot01

    rgoot01 Member

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    Its just bone stock, nothing engine wise or exhaust has been done to it.
     
  4. HDDon

    HDDon Experienced Member Contributor Retired Moderators

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    If the bike runs well I think I would try lowering the main jet needle if you want it to go leaner. I'm not familiar with the term dry fouling. Usually if a plug is fouled it is wet at the tip.
     
  5. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    If you want to lean it out a wee bit across the range the try a smaller slow jet as it supplies fuel through the whole of the rev range
    By 1993 hd had reduced the slow jet size on big twins to a 42 most people fit a 45 as it is at times too lean so perhaps that would be a good place to start

    Brian