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  • #1

    Weird Running Issue

    I have a strange issue that I can't quite figure out. Startup and idle are all fine, I can rev it fine in neutral, but once I put it in gear it feels like I am down at least one cylinder. It almost behaves like a pickup issue BUT IT IS NOT THE PICKUPS (I emphasize this because you are all going to tell me this is the issue and it is not).

    I put it up on the center stand today and fired her up and as it was idling I started manually moving the pickups and advance and it didn't cause any problems. When I put it in gear though it it started acting up. It almost sounds like some sort of transmission issue. It sounded very "chunky" and jerky.

    I don't know where to go with this or how to describe it (I am bad at describing things like this)
    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
    Tags: None
  • #2
    Nate, with it in gear, if you ad fuel does it help or bog down worse? It sounds like possibly a weak coil to me.
    Life is what happens while your planning everything else!

    When your work speaks for itself, don't interrupt.

    81 XS1100 Special - Humpty Dumpty
    80 XS1100 Special - Project Resurrection


    Previously owned
    93 GSX600F
    80 XS1100 Special - Ruby
    81 XS1100 Special
    81 CB750 C
    80 CB750 C
    78 XS750

    Comment

    • #3
      Originally posted by DGXSER View Post
      Nate, with it in gear, if you ad fuel does it help or bog down worse? It sounds like possibly a weak coil to me.
      It stays about the same. It can still pull itself along. I did ride to work one day with it like this.

      Coils have crossed my mind. I do have the POS mike's green coils...
      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

      • #4
        .

        maybe i am wrong, but if you put it in gear on the center stand, the dogs in the slots will constantly bounce back and forth. with no resistance to the back tire, such as pavement, i think it would be normal for the trans to be clunking around and probably not good for it.
        Steven


        1981 XS 1100 LH
        1979 XS 1100 SF

        Comment

        • #5
          Have you checked your pickup coils??
















          OK, now that you're mad.. lol. Have you checked your plugs/wires lately? A bad spot or bad plug will let it idle, but jump to ground as the amps go up.

          A lot of times, putting the bike in gear on the center stand, the drivetrain will get clunky since there's no pressure on gears. Slightly add some back brake while it does this to see if that stops the clunking.

          Oh... and do you have another TCI you could plug in to check if it's that?

          That's all I got at the moment, but also.. don't forget to check those pickup coils!


          PS.. And Gallaecus beat me to that part.. lol
          Last edited by trbig; 10-22-2013, 12:40 PM.
          Try your hardest to be the kind of person your dog thinks you are.

          You can live to be 100, as long as you give up everything that would make you want to live to be 100!

          Current bikes:
          '06 Suzuki DR650
          *'82 XJ1100 with the 1179 kit. "Mad Maxim"
          '82 XJ1100 Completely stock fixer-upper
          '82 XJ1100 Bagger fixer-upper
          '82 XJ1100 Motor/frame and lots of boxes of parts
          '82 XJ1100 Parts bike
          '81 XS1100 Special
          '81 YZ250
          '80 XS850 Special
          '80 XR100
          *Crashed/Totalled, still own

          Comment

          • #6
            I still gotta stay with the pickup wires Nate. It sounds like one is shorted to the neutral switch wire.

            Try disconnecting the neutral wire from the switch and grounding it so the green light is on all the time and see if it eliminates the misfire in gear.
            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

            • #7
              I will recheck with the rear brake lightly applied.

              Neutral wire has been grounded out for months now.
              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

              • #8
                Originally posted by natemoen View Post
                Neutral wire has been grounded out for months now.

                Slacker... lol.
                Try your hardest to be the kind of person your dog thinks you are.

                You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                Current bikes:
                '06 Suzuki DR650
                *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                '82 XJ1100 Completely stock fixer-upper
                '82 XJ1100 Bagger fixer-upper
                '82 XJ1100 Motor/frame and lots of boxes of parts
                '82 XJ1100 Parts bike
                '81 XS1100 Special
                '81 YZ250
                '80 XS850 Special
                '80 XR100
                *Crashed/Totalled, still own

                Comment

                • #9
                  Originally posted by natemoen View Post
                  I will recheck with the rear brake lightly applied.

                  Neutral wire has been grounded out for months now.
                  Originally posted by trbig View Post
                  Slacker... lol.
                  I think we may have found the problem.

                  WTF does the rear brake light have to do with the price of rice in china?
                  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

                  • #10
                    Take another pain pill and down a beer, Greg.. then go back and actually READ. "Brake lightLY"
                    Try your hardest to be the kind of person your dog thinks you are.

                    You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                    Current bikes:
                    '06 Suzuki DR650
                    *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                    '82 XJ1100 Completely stock fixer-upper
                    '82 XJ1100 Bagger fixer-upper
                    '82 XJ1100 Motor/frame and lots of boxes of parts
                    '82 XJ1100 Parts bike
                    '81 XS1100 Special
                    '81 YZ250
                    '80 XS850 Special
                    '80 XR100
                    *Crashed/Totalled, still own

                    Comment

                    • #11
                      Oh, I see. My trans rattles at low RPM also particularly when it's running rough. It's the normal slack in the gears.
                      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

                      • #12
                        Originally posted by trbig View Post
                        Slacker... lol.
                        Originally posted by BA80 View Post
                        I think we may have found the problem.

                        Piss off, both of you

                        But now I am out of gas...guess I have to go out then today.
                        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

                        • #13
                          Being real low on fuel can make it run funky too Nate.
                          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

                          • #14
                            Originally posted by BA80 View Post
                            Being real low on fuel can make it run funky too Nate.
                            No, that is not the issue.
                            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

                            • #15
                              Hey Nate- Do you have this issue when it rains? I think the guys on here attributed my issues to a possible coil issue, as it revs fine in neutral, put her in gear and go, and it bogs down. I never bothered to check on it.
                              1979 XS1100F
                              2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                              Comment

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