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  • Broken idle mixture screw

    ok so i finaly figured out wht my bike was running really bad. i backed the idle mixture screws out and 1 and 4 didnt have a tip on it. i done further inspection and sure enough they were broke i have tried the methods in the tech tip section and no luck they are REALLY stuck in there i have no idea hot to get them out, i could feel the tip of it on the inside of the carb by the butterfly...i hope i dont have to replace those 2 carbs. anyhelp would be grealty appretiated

  • #2
    You're lucky if you can feel the tip of the needle sticking out. I think it's easier this way. I was able to do two carbs using the "internal press" method that I think you're referring to. I soaked and re-soaked and re-soaked the needles with Sea Foam Deep Creep over a period of at least a week. Once you get the needle to actually move flush with the chamber wall, it will take just a little pit of prying with a pick to move it the rest of the way.

    It will eventually work. If I did it, you can to.

    Bob
    1979 XS1100F

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    • #3
      thanks, i need all the help i can get. im sure the broken screws will make the bike run terrible.

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      • #4
        I had to deal with this about 2 months ago. Mine were really stuck, 1 of the came out with the push pin pry method. Give that a try first and try to get quality pins. The really cheap ones the plastic break easily and the pin is crap. If that doesnt work get some mechanic picks and get a little midevil with them. Whiskey helps! They will fall out with some work just dont give up.
        '78E

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        • #5
          I have used a nut and bolt as a screw jack to push the broken tip out. You need a bolt a tiny bit shorter than the space . Put a nut on the bolt and with two wrenches unscrew the nut. It will force the busted tip upwards. Go slow, use penetrating spray and a soldering iron to heat the tip. The heat will help draw the penetrating spray in and may pop it loose.

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          • #6
            ok i got the 2 tips out and reset all the screws to 2 turns out the bike runs really good now but i cant set the idle. then i noticed the bike is smoking i looked into the megaphone and culd see oil or gas in it. i shut the bike off and wiped it out but it had no smell to it but it looks like oil or something. should i be concerned about this?

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            • #7
              Did you purchase new needles or are you using the broken ones?

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              • #8
                Originally posted by Shacknasty View Post
                Did you purchase new needles or are you using the broken ones?
                Ahhh, my thoughts exactly!
                Nathan
                KD9ARL

                μολὼν λαβέ

                1978 XS1100E
                K&N Filter
                #45 pilot Jet, #137.5 Main Jet
                OEM Exhaust
                ATK Fork Brace
                LED Dash lights
                Ammeter, Oil Pressure, Oil Temp, and Volt Meters

                Green Monster Coils
                SS Brake Lines
                Vision 550 Auto Tensioner

                In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

                Theodore Roosevelt

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                • #9
                  a box of thumb tacks and a set of mechannic picks, and something to use to push down with (flat head screw driver), beer and whisky, and patiance...if u have some..lol.. eventually it will pop out
                  _____________________________________________ 1979 XS 1100 Special "The judge" mods- K&N air pods, 4-1 mac, 147.5 pilots, 57.5 mains, LED turn signal, cafe bars, HEL translucent yellow stainless steel brake line, dyna coil (dc2-1), raptor 660 mc, r6 controls..(sold)

                  1982 gs1100e "all business" cafe project
                  1980 gs1000g "stock"
                  1982 honda express "stretched 10 inch(my daughters scooter)
                  2008 jmstar 150cc Chinese scooter ( wife's bike)

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                  • #10
                    well i hate to say that im using the old ones just as temporary(i know its not good) but i have no idea what to adjust them to when i replace them, i think i need to invest in a sync tool and color tune or are they the same?

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                    • #11
                      Not going to get far with the the broken tips.

                      When you get replacement mixture needles about 2 turns out is a decent start but you do need to sync and tune properly.
                      Nathan
                      KD9ARL

                      μολὼν λαβέ

                      1978 XS1100E
                      K&N Filter
                      #45 pilot Jet, #137.5 Main Jet
                      OEM Exhaust
                      ATK Fork Brace
                      LED Dash lights
                      Ammeter, Oil Pressure, Oil Temp, and Volt Meters

                      Green Monster Coils
                      SS Brake Lines
                      Vision 550 Auto Tensioner

                      In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

                      Theodore Roosevelt

                      Comment


                      • #12
                        ok sounds good but....the one in #2 is fine and the pipe doesnt get as hot as the others. i done the little sprayin water on it, it sizzles but the other ones are so hot that the water doesnt even stay on them.

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                        • #13
                          Maybe the floats in your carbs are need to be set. Could be to rich in one and lean in the other.
                          '78E

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