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Thread: Carb help

  1. #1
    Spirit Walker Jay Little buffalo's Avatar
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    1980 Honda cx500 carb adjustment ? Hello everyone I figured someone would know, My right carb seems to be running rich, my left carb smells fine well i am going by how it smells out the back end... lol, should I adjust the air mixture on the right or bottom both out and take em out 2 turns each any help would be awesome...
    Jay

    1980 Honda cx500

  2. #2
    Senior Member bandit's Avatar
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    Quote Originally Posted by Little buffalo View Post
    1980 Honda cx500 carb adjustment ? Hello everyone I figured someone would know, My right carb seems to be running rich, my left carb smells fine well i am going by how it smells out the back end... lol, should I adjust the air mixture on the right or bottom both out and take em out 2 turns each any help would be awesome...
    it is possible to tune each carb individually,but,are you sure there is not another issue.

    take both plugs out,compare them[or post a photo]and let the guys know what you find
    1981 GL500 , UK MODEL,needing a bit of tender loving care

    1982 GL500 , UK MODEL,my daily ride.



    Andalucia,in the south of spain

    aka spanish bandit

  3. #3
    Senior Member Interstater's Avatar
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    Quote Originally Posted by Little buffalo View Post
    1980 Honda cx500 carb adjustment ? Hello everyone I figured someone would know, My right carb seems to be running rich, my left carb smells fine well i am going by how it smells out the back end... lol, should I adjust the air mixture on the right or bottom both out and take em out 2 turns each any help would be awesome...


    Be careful when sniffing exhaust and trying to diagnose carb issues. Besides the obvious issues of sniffing exhaust, the stock H-box is not just a box as it has internal cross-overs to redirect flow. For example, your right cylinder can be rich, and the left muffler outlet is the one that may smell more like it. A better way of determining rich vs lean is to pull and view spark plugs.
    In the stable...
    '81 GL500 Interstate
    '82 GL500 Interstate
    '82 CX500 Custom
    '82 GL1100 Interstate
    '99 Shadow ACE 750
    '99 Valkyrie Interstate

    Past rides... '76 CB200T, '79 CX500, '81 Yam XS1100s, '81 GL500i (x 2), '84 V45 Sabre (x2), '85 V65 Sabre, '85 V30 Magna, '80 FL Shovelhead, '82 GL1100a, '84 GL1200i (x2).

  4. #4
    Spirit Walker Jay Little buffalo's Avatar
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    Cool thanks guys did not think of that, will do. I will take pics this morning & post. When its cold i see more gas fumes out of right side exhaust then left when warn none just the smells rich. i know i need to rebuild carbs but that won't happen till a few weeks from now. she idles ok, rides fine 3.8 gallons of fuel burned got me 135 miles. think i could be doing better. thanks will post pics in a little while.
    Jay

    1980 Honda cx500

  5. #5
    Spirit Walker Jay Little buffalo's Avatar
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    http://s45.photobucket.com/albums/f9...1.jpg&newest=1



    Ok Guys here is the pic of the plugs you asked for. Any ideas they look the same to me.
    Jay

    1980 Honda cx500

  6. #6
    V-FORE's Avatar
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    Having just taken my carbs apart & cleaning the idle jets, replacing the throttle cables... She runs much smoother! I ran the mixture screws out 1 5/8 turns each & all seems good. Before I tackled the carbs she idled & ran ok... I was getting 46 mpg over the last 3,100 miles. So your 35mpg seems low. Very easy job!



    Good Luck



    Gary
    1980 CX500D-W/Vetter Windjamer III Fairing



    1978 CX500-In process

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