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Coughing sportster

Discussion in 'Motorcycle Tech Talk' started by podsman, Oct 6, 2011.

  1. podsman

    podsman Member

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    the bike sat for about a year, I bought it and rode it home. Bad gas. I drained the tank, cleaned the carb, installed Stage1 kit, 46 pilot 185 main. Now it runs great until it gets good and warm. I tried fattening her up to no avail. I even changed intake seals. when she coughs she smells like detonation. Could this be an electronic problem?
    podsman, Oct 6, 2011
    #1
  3. cowboy

    cowboy Moderator Staff Member

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    Whey year & size 883-1200 , also did you check the plugs ?
    cowboy, Oct 6, 2011
    #2
  4. chucktx

    chucktx Moderator Staff Member

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    i think you need to adjust the air screw out a bit...........
    chucktx, Oct 6, 2011
    #3
  5. podsman

    podsman Member

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    the bike is a2004 1200 xlc. ran mixture screw just about all out
    podsman, Oct 6, 2011
    #4
  6. cowboy

    cowboy Moderator Staff Member

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    try running it back in real easy come out about 2 1/2 turns & work from there , also does it stock pipes or after market loud pipes , if after market you might have to come out to 3,1/2 turns make sure your engine is at running temp
    cowboy, Oct 6, 2011
    #5
  7. chucktx

    chucktx Moderator Staff Member

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    when does it cough......taking off, mid way through the power range, or at wot??
    chucktx, Oct 7, 2011
    #6
  8. podsman

    podsman Member

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    She coughs coming off idle taking off in 1st.
    also she seems to break down at about 1500 rpm. She does have loud pipes.
    podsman, Oct 7, 2011
    #7
  9. cowboy

    cowboy Moderator Staff Member

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    Ok When I did my daughters 04 sporty I got the cv performance kit & had to adjust it out to about 3-1/2 turns , the bike has to be at running temps put about 5-10 miles then adj each carb/ bike is different but Now you have s starting point
    cowboy, Oct 7, 2011
    #8
  10. podsman

    podsman Member

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    thanx, I think that gets me close. took her out , lots less coughing. Need to run her good now, see what happens. D.C. area traffic sucks.
    podsman, Oct 7, 2011
    #9
  11. cowboy

    cowboy Moderator Staff Member

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    Also double check to make sure there's baffles in you pipes , flashlight & just look in the end
    cowboy, Oct 7, 2011
    #10

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