First "REAL" problem with missing

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  • rangerguy302
    Truly XSive
    • May 2014
    • 125
    • Billings Montana

    #1

    First "REAL" problem with missing

    So the battleship started popping, back firing, coughing, no power, and SUCKING GAS.....It did this when it was wet outside since I have had the bike but it's doing it on sunny days now. No I haven't tore into it yet, happened yesterday on the way to and from work.
    79 XS11 F
  • rangerguy302
    Truly XSive
    • May 2014
    • 125
    • Billings Montana

    #2
    Just now

    I discovered that if it's in nuetural it's fine reving, when in gear bogs popps spits coughs, all that funstuff
    79 XS11 F

    Comment

    • motoman
      Master of XSology
      • Aug 2005
      • 8413
      • Grand Junction, Colorado

      #3
      Initially, I would suggest pulling the left-side ignition cover, using both hands pull right smartly every inch of those pick-up coil wires. If one stretches from pulling, internally those little wires are broken. Cut wire/ sheathing where broken, strip back each end a tiny bit. Slip a tiny piece of shrink tubing over one of the wires. Using a naked butt connector, shorten it just so both wire ends will insert in connector and crimp it on wires(no solder). Slip shrink tubing over repair and shrink it....done. Doing the initial broken wire test will at least eliminate this as an issue. Cruddy internal contacts of RUN/KILL switch is another problematic area as this switch completes running circuit.
      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.

      Comment

      • DAVINCI
        XS-XJ Guru
        • Jan 2011
        • 1048
        • Cedar Mountain, NC

        #4
        There is a splice point inside the wire harness, IIRC about 6"-8" back from the ignition cover. Water can get in there and cause exactly this trouble. Once in there it can take a long time to dry out, so, yeah, sunny days it can show up too because the water is still in there.
        Former owner, but I have NO PARTS LEFT!

        Comment

        • BA80
          Doctor of XSology
          • Oct 2010
          • 9980
          • Tulsa, Ok

          #5
          Possibly in the harness but the only issue I've had in rain/carwash is the pickup coil plug behind the fuse panel. For some reason it's vulnerable whenever there are wet conditions. I keep mine full of dielectric grease and haven't had a problem in years.
          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.

          Comment

          • bikerphil
            Master of XSology
            • Jan 2008
            • 8628
            • South Flori-DUH

            #6
            When this type of wet weather misfire happens, a temporary fix to get you home is to remove the neutral switch wire and ground it under a nearby case cover bolt. The engine should run on all 4 this way with the neutral light remaining on.
            2H7 (79) owned since '89
            3H3 owned since '06

            "If it ain't broke, modify it"

            Comment

            • BA80
              Doctor of XSology
              • Oct 2010
              • 9980
              • Tulsa, Ok

              #7
              Originally posted by bikerphil
              When this type of wet weather misfire happens, a temporary fix to get you home is to remove the neutral switch wire and ground it under a nearby case cover bolt. The engine should run on all 4 this way with the neutral light remaining on.
              I tried that with mine and it didn't work.
              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.

              Comment

              • bikerphil
                Master of XSology
                • Jan 2008
                • 8628
                • South Flori-DUH

                #8
                Originally posted by BA80
                I tried that with mine and it didn't work.
                It saved me a couple of times on the side of the road before I eliminated the neutral wire and switch entirely.
                2H7 (79) owned since '89
                3H3 owned since '06

                "If it ain't broke, modify it"

                Comment

                • sethhope
                  XStremely XSive
                  • May 2016
                  • 226
                  • Springfield, MO

                  #9
                  If you have ruled out the pickup coil wires, you might want to check your coils and plug wires.
                  My bike started doing very similar last year after my rebuild. Seems my plug wires were cracked and were letting water in. They would fire, but weakly. Anytime there was load on the engine, it would run rich and backfire like crazy, returning to normal in neutral. I'd imagine the sunny day issues are being caused by corrosion in the plug wires/coils.
                  1979 XS1100F "Roxy" (my first bike ) - '91 Suzuki GSX1100 Fairing, BMW bags, Cheap ABS Trunk, aftermarket cruiser seat, MAC 4-2 exhaust, Heavy Duty folding kickstart, XS11 Special signals and gauges, Blade Fuse Conversion, Dynacoil Greens w/ ballast bypass, SS brake lines

                  Comment

                  • rangerguy302
                    Truly XSive
                    • May 2014
                    • 125
                    • Billings Montana

                    #10
                    Yup...broken pickup coil wire. Checked both coils and has they both are at 1.8-1.9 ohm. The RUN/KILL switch got eliminated 3yrs ago, it was totally rotted. It's better but got this stumble/miss thing going still at 5000-6000rpm. (aka the fun part) I get that figgured out and I'm good. Thanks for the input guys
                    79 XS11 F

                    Comment

                    • BA80
                      Doctor of XSology
                      • Oct 2010
                      • 9980
                      • Tulsa, Ok

                      #11
                      I'll be in Billings the end of July. Riding up there after the Colorado rally to do some visiting. Gonna hit Great Falls too.
                      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.

                      Comment

                      • rangerguy302
                        Truly XSive
                        • May 2014
                        • 125
                        • Billings Montana

                        #12
                        That would be awesome to meet up man!!! I'd like to see how one of these run when they are proper and not "budgeted" together. Mine isn't pretty but I like it like that, not scared to acculy ride it....and God takes anything I have that's perfect...lol
                        79 XS11 F

                        Comment

                        • BA80
                          Doctor of XSology
                          • Oct 2010
                          • 9980
                          • Tulsa, Ok

                          #13
                          I'll buy you a beer, or 50. Bonz is thinking of riding up with me too.
                          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.

                          Comment

                          • rangerguy302
                            Truly XSive
                            • May 2014
                            • 125
                            • Billings Montana

                            #14
                            Thanks but don't drink, a professional opinion on what's up with a few things with the bike would be great though. There's a few quick rides I like to take close to Billings I'll show you.
                            79 XS11 F

                            Comment

                            • BA80
                              Doctor of XSology
                              • Oct 2010
                              • 9980
                              • Tulsa, Ok

                              #15
                              Originally posted by rangerguy302
                              Thanks but don't drink, a professional opinion on what's up with a few things with the bike would be great though. There's a few quick rides I like to take close to Billings I'll show you.
                              Cool. I'll get you a Shirley Temple. LOL

                              I lived in Billings from 77 'till 97. I was back there about a year ago and everything has changed. It was Christmas and the snow was about a foot deep. I certainly don't miss that.
                              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.

                              Comment

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