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Discussion in 'Motorcycle Tech Talk' started by 2005FXD, Dec 26, 2011.

  1. 2005FXD

    2005FXD New Member

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    Asking for help - Just purchased a 2005 FXD from a local dealer. Only 3100 miles. Bike starts up and idles good. After warmed up, put bike in gear and it has trouble accelerating. It wants to hesitate, like its cold but it isn't. Air temperature was about 40 degrees. I tried a few things and found that acceleration is much better when I run with the enrichener 1/2 pulled out. The bike has the original air cleaner and stock pipes. I can't tell if its just running too lean and starving for fuel or if something else is causing the problem, like a vacum or venting issue. Any ideas? thanks.
    2005FXD, Dec 26, 2011
    #1
  3. FLHTbiker

    FLHTbiker Moderator Staff Member

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    I usually start mine in those temps with the choke out and when I take off will push it in part way for a couple miles. Gives it a chance to warm up then it's fine.
    FLHTbiker, Dec 26, 2011
    #2
  4. bguillory66

    bguillory66 Active Member

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    make sure its had time to warm up, I have to ride a good 5 to 10 minutes in warm weather to get mine to run good, if it is warmed up and hesitating when you try to accelarate it could be a intake leak, had that happen to my 96 FXDL.
    bguillory66, Dec 26, 2011
    #3
  5. 2005FXD

    2005FXD New Member

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    By intake leak, do you mean a bad carb or manifold gasket? Thanks.
    2005FXD, Dec 26, 2011
    #4
  6. cowboy

    cowboy Moderator Staff Member

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    intake gaskets , rubber boot type that your carb set;s into going to heads
    cowboy, Dec 26, 2011
    #5
  7. prodrag1320

    prodrag1320 Active Member

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    go up a size or two on the int. jet,it`ll run fine
    prodrag1320, Dec 27, 2011
    #6
  8. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Yep, fatten up the slow jet will help but you could suffer fuel economy.
    FLHTbiker, Dec 27, 2011
    #7
  9. prodrag1320

    prodrag1320 Active Member

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    if its not running right (needing to keep chock out a little),its too lean now,with a fatter int. jet,it will be jetted right.fuel milage wont suffer,even if it did,do want slightly better fuel milage and a bike that runs like s**T????
    prodrag1320, Dec 27, 2011
    #8
  10. chucktx

    chucktx Moderator Staff Member

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    first i would do is to make sure it is warmed up.....it takes a minimum of 15 miles at 2500rpm to bring the engine up to normal operating temp. i am sure it is lean as it comes that way from the factory.........
    chucktx, Dec 28, 2011
    #9
  11. MountainCruiser

    MountainCruiser Well-Known Member

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    I agree with Chuck. Look and see if the plug has ever been taken out from the air/fuel mix screw. If it has not, then at factory setting and it came lean. First tune air / fuel mixture before you think of jetting. Go read the info from Ken from CV performance. Go to Harley-performance.com and read the info on carb tuning and carb jetting. It is a real good starting point to begin to get it in your mind. Then come back and ask questions. There are some guys on here really know their stuff. I have learned a lot listening to the talk without saying a word...
    MountainCruiser, Dec 28, 2011
    #10

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