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rejetting a carb

Discussion in 'Motorcycle Tech Talk' started by Augusta72, Sep 13, 2011.

  1. Augusta72

    Augusta72 New Member

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    Have a 2001 twin-cam standard Flh, true-dual exhaust.510 SS gear drive cams.High-flow air cleaner. Plugs are white.Carb pops alittle.Need good combo of jet sizes. And maybe a heads up on a new ignition. Oh...Sreaming Eagle slip-on pipes. 88cu.
    Last edited: Sep 13, 2011
    Augusta72, Sep 13, 2011
    #1
  3. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Re: Re-jetting a carb

    Do you have any idea what you are running for jets now?

    Welcome to the forum by the way..:cool:
    JohnnyBiker, Sep 13, 2011
    #2
  4. Augusta72

    Augusta72 New Member

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    Re: Re-jetting a carb

    Stock so far.. Havent touched the carb.Thats my weak point
    Augusta72, Sep 13, 2011
    #3
  5. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Re: Re-jetting a carb

    If your plugs are white then this indicates a definite lean condition. I have no experience with the FLH. I am sure some of the more seasoned members will chime in on this...
    JohnnyBiker, Sep 13, 2011
    #4
  6. Lucifer

    Lucifer Well-Known Member

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    A CV Performance Stage 1 kit might be the ticket for you...popping throgh the carb is a sign of being lean... you need to fatten it up a bit...main jet could be fine if it's a 180,but the pilot jet and needle are gonna need tweaking...a 46 pilot and either shim or replace the needle is where to start...
    Lucifer, Sep 15, 2011
    #5
  7. hotroadking

    hotroadking Super Moderator Staff Member

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    Plug color is not readable anymore without serious
    NASCAR style equipment, the clean fuels just make
    getting that tan color impossible.

    Only thing a plug reading will tell is that you
    are super rich, (black) leaking oil past rings or guides (oily)
    hotroadking, Sep 15, 2011
    #6
  8. Lucifer

    Lucifer Well-Known Member

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    Yep...pretty tough to read a plug nowadays...shiny clean(glazed) and a blueish look on the electrode is a sign it's running pretty hot though... popping through the carb still says lean if the bike is warmed up....
    Lucifer, Sep 15, 2011
    #7
  9. hotroadking

    hotroadking Super Moderator Staff Member

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    yep sound is best, afr sniffer better,

    You might have intake seal leak as well
    hotroadking, Sep 15, 2011
    #8
  10. Lucifer

    Lucifer Well-Known Member

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    Lucifer, Sep 15, 2011
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  11. JohnnyBiker

    JohnnyBiker Well-Known Member

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    I disagree with your statement. If you are watching what your bike is doing, how it is reacting in certain environments, then plug color is reliable. If you are used to seeing that "tan" color, then all of a sudden you pull the plugs and they are white, wouldn't you agree that something has changed??? Environment, air density, ambient air temp, timing etc all contribute.
    JohnnyBiker, Sep 15, 2011
    #10
  12. Augusta72

    Augusta72 New Member

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    Thanks, that doesnt seem like rocket science... and if that fails than on to a rejet. Thanks again
    Augusta72, Sep 15, 2011
    #11
  13. Augusta72

    Augusta72 New Member

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    I will say before the exhaust change ,I had a nice tan color on the plugs.
    Augusta72, Sep 15, 2011
    #12
  14. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Here is an example. I changed a set of plugs in early August. It was hot and humid. Now I went on a ride with another member of the forum (Red Rider) to Wisconsin. I was getting very good gas mileage. I thought that this was strange. I was getting like 62 mile to the gallon. When I got home from Wisconsin, I pulled the plugs to take a look. They were white, way more than what they ever have been. I regapped them to .040 and they have been right on ever since. The moral, something changed, be aware of your bike settings.. :cool:
    JohnnyBiker, Sep 15, 2011
    #13

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