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  • I learn better through experience

    So I learn a valuable lesson today. After I had cleaned the carbs on my 80G it would not go above 5000 rpm. It seemed as if as soon as it hit 4500 lost power. So after much research on this site I was pretty sure I had something wrong with the carbs somewhere.
    Pulled the carbs back off and got the coffee can I had just used to hold carb parts ready to go. I then noticed 4 small black rubber plugs in the bottom of said coffee can, they looked just like the pilot jet plugs.... Turns out when you don't put all the parts back in the carb, i.e. pilot jet plugs, it runs really rich has no power, and won't go above 5000 rpm.

    Bike works great now!
    80 G

  • #2
    Originally posted by werdna80 View Post
    So I learn a valuable lesson today. After I had cleaned the carbs on my 80G it would not go above 5000 rpm. It seemed as if as soon as it hit 4500 lost power. So after much research on this site I was pretty sure I had something wrong with the carbs somewhere.
    Pulled the carbs back off and got the coffee can I had just used to hold carb parts ready to go. I then noticed 4 small black rubber plugs in the bottom of said coffee can, they looked just like the pilot jet plugs.... Turns out when you don't put all the parts back in the carb, i.e. pilot jet plugs, it runs really rich has no power, and won't go above 5000 rpm.

    Bike works great now!
    Glad to hear you found some missing parts. Another thing to remember when removing internal parts from carbs, keep the float needles/floats separated so they go back in the same carb and seat they were removed from. Reason being, float level setting WILL slightly vary with each float needle and seat if not matched back the same as they were. Just don't toss all parts together in a coffee can.
    81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

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    • #3
      Glad to hear you figured it out. Looks like you have some of those bastardized 80 carbs that still have the sharing tunnel, and that's why it uses the pilot jet tower plugs. The later 80 carbs don't have the sharing tunnel and won't use the plugs. Just remember this for your specific carbs for now. Just remember that other's 80 carbs may not need the plugs.

      T.C.
      T. C. Gresham
      81SH "Godzilla" . . .1179cc super-rat.
      79SF "The Teacher" . . .basket case!
      History shows again and again,
      How nature points out the folly of men!

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      • #4
        Originally posted by TopCatGr58 View Post
        Glad to hear you figured it out. Looks like you have some of those bastardized 80 carbs that still have the sharing tunnel, and that's why it uses the pilot jet tower plugs. The later 80 carbs don't have the sharing tunnel and won't use the plugs. Just remember this for your specific carbs for now. Just remember that other's 80 carbs may not need the plugs.

        T.C.
        You never know what mods have been done by the previous owners until you tear into it (if you need to).
        Skids (Sid Hansen)

        Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

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        • #5
          Originally posted by skids View Post
          You never know what mods have been done by the previous owners until you tear into it (if you need to).
          The earlier 80 carbs came that way from the factory skids.
          Greg

          Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

          ― Albert Einstein

          80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

          The list changes.

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          • #6
            Originally posted by werdna80 View Post
            So I learn a valuable lesson today. After I had cleaned the carbs on my 80G it would not go above 5000 rpm. It seemed as if as soon as it hit 4500 lost power. So after much research on this site I was pretty sure I had something wrong with the carbs somewhere.
            Pulled the carbs back off and got the coffee can I had just used to hold carb parts ready to go. I then noticed 4 small black rubber plugs in the bottom of said coffee can, they looked just like the pilot jet plugs.... Turns out when you don't put all the parts back in the carb, i.e. pilot jet plugs, it runs really rich has no power, and won't go above 5000 rpm.

            Bike works great now!
            Good decisions come from good judgement. Good judgement comes from experience. Experience comes from bad decisions. Don't feel too bad - you're not the first one to make that mistake. And they really do run like crap without the plugs installed. Glad you got it figured out.
            Last edited by dbeardslee; 04-17-2016, 09:54 AM.
            I think I have a loose screw behind the handlebars.

            '79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake lines

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