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Discussion in 'Motorcycle Tech Talk' started by birch, Jan 29, 2008.

  1. birch

    birch New Member

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    My 01 roadking has over 100k miles.
    last fall i noticed as the weather cooled off it ran crappy for the first 10 miles after a cold start. about as if there was dirt in the gas, other than that it still runs good.
    any ideas?
    birch, Jan 29, 2008
    #1
  3. skull2007

    skull2007 Active Member

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    what kind of maintence history have you had over the miles? what kind of fluids did you run
    skull2007, Jan 29, 2008
    #2
  4. Red Rider

    Red Rider Well-Known Member

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    You also need to specify carb or EFI; any mods (especially lately); tuning history; if you've moved (changed altitudes is big) etc.....but a WAG would be a failing plug wire, as I had very similar symptoms not too long ago. Still, that is really just a shot in the dark with this little info.
    Red Rider, Jan 29, 2008
    #3
  5. birch

    birch New Member

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    okay
    EFI
    at 80k i changed to a gear drive cam and increased the cam a little.
    other than that i put stage 1 at 10k and a thunder header at 30 k.
    I run Mobile 1, Change the plugs and clean the air filter regularly.

    i started off the season in March at 80k with the new gears.
    I rode it all year and had no issues.
    I've never had it to a shop and have done all maintenance myself.

    Starts okay, but when i give it some gas i have to feather it.
    Once it warms up, after 10 miles or so it runs good.
    birch, Jan 29, 2008
    #4
  6. chucktx

    chucktx Moderator Staff Member

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    check for a vacumm leak.....it is leaking when cold, but as it warms up the two surfaces swell and seal again......hoses, mating surfaces with gaskets...ect.....it will be on the intake side of the airfilter...let us know and have fun!!!!:)
    chucktx, Jan 29, 2008
    #5
  7. VYBR8ER

    VYBR8ER New Member

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    You have a magnetti-marelli efi system. It needs the hot and cold idle adjustments done.
    VYBR8ER, Feb 2, 2008
    #6
  8. chucktx

    chucktx Moderator Staff Member

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    question......why would a computer get out of adjustment???? i asume that the magnetti-marelli efi system is electronic??? i know why and how mech. systems get out, but i thought the efi's were developed to eliminate all that stuff......thanks:)
    chucktx, Feb 3, 2008
    #7

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