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  • IMHO the float level, idle mixture and sync would be the place to start.

    BTW moto, the vacuum advance doen't come into play at idle so they would have to rev it to make it move. Unless it was running so badly that the idle had to be set up so the butterfly uncovered the vacuum oraface in the carb.
    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


    • Easy quick & cheap

      Filters;
      I got this advice from a wise old mining engineer. "For any motor not running right - change the filters...usually corrects problem, and even if something more is needed, filters should be serviced periodically anyway."

      I had a dodge 318 cu in motor that failed emissions due to too many hydrocarbons. I changed air filter. It went from just failing to barely passing

      good luck wrenching
      It is a great big beautiful world out there
      Brent in GA
      Yamaha 80XS1100SG, HD Firefighter Special Edition 02 Road King, Honda 450 rat, 08 Buell 1125R tour modified, 83 goldwing parts bike gone-traded for XJ1100, 2014 HD electraglide police

      Comment


      • Good point Brent. An air filter on a carbureted engine will make a world of difference.
        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


        • One of my XS-Mas presents





          Shelf bracket mounts































          1980 XS1100G "Dolly G" Full Dresser (with a coat of many colors )
          1979 XS1100SF (stock-euro mods planned)
          1984 XV700L Virago (to be hot-modded)
          1983 XJ750MK Midnight Maxim (semi-restored DD)
          1977 XS650D ( patiently awaiting resto)

          Sometimes it takes a whole tank of gas before you can think straight.

          Comment


          • Nice job and thanks for the pictures. Thanks.

            How are they working?

            Aches n Pains
            1995 KZ100P
            Pods, jets, pipes, cam adjuster, oil cooler

            1977 Ironhead - custom build
            Hot engine, custom frame, KZ front and rear, high torque starter, alternator conversion, Progressive shocks, Thunderheart wiring, Dyna ignition, oil cooler, Dakota Digital instruments, etc.

            Sold all my XS's to Eastcoaster but still love to keep up with you guys. This is the best cycle forum on the web.

            Comment


            • Originally posted by Aches n Pains View Post
              Nice job and thanks for the pictures. Thanks.

              How are they working?

              Aches n Pains
              Thanxs, I will let ya know how they work in about a month give or take.

              I haven't had this bike in one peice since '01. Found this site in '05 and slowly but surely I am getting all my ducks in a row to have Her on the road this Spring.
              1980 XS1100G "Dolly G" Full Dresser (with a coat of many colors )
              1979 XS1100SF (stock-euro mods planned)
              1984 XV700L Virago (to be hot-modded)
              1983 XJ750MK Midnight Maxim (semi-restored DD)
              1977 XS650D ( patiently awaiting resto)

              Sometimes it takes a whole tank of gas before you can think straight.

              Comment


              • Great looking motor. Excellent cleanup on it. I think you're going to be pleased.
                1980 XS 11 Special: The King of Kong, 9th wonder of the world. Pacifico fairing, chopped shield, Yamaha hard bags, Diamond seat, T-Kat fork brace, XJ top end, YICS Eliminator, '80 carbs from Spyder Cycle Works, K&N Air filter, Fuse block, stainless steel valves & reg/rect from Oregon MC Parts. Raptor CCT, XJ air shocks, 850 FD, Sportster mufflers, Standard handle bar, Tusk Bar Risers, SS braided brake lines. Cat Eye speedometer. HID projector beam headlight, LED running lights.

                Comment


                • Originally posted by BA80 View Post
                  Good point Brent. An air filter on a carbureted engine will make a world of difference.
                  Thanks, but before I begin to look too smart... a story - When a fuel filter on my HD road king became partially clogged, what did I do?? Took it to Durango HD...no filter replacement, they broke a wire to fuel injector, assured me that fuel filter, pump etc were all fine since it passed a pressure test, fixed the wire, gave me a place to sit while my riding buddies rode the Million Dollar Hwy (yes it really is paved with gold).

                  I limped back at legal speeds all the way to GA and replaced the fuel filter myself later. No more leaning out at high speed cruising or prolonged high fuel demand situations. Just changing the filter was much quicker and cheaper than work by Durango HD (: ,,,and it FIXED the problem.

                  Today I Rode and charged battery on another. Used 3/4 amp automatic charger.
                  It is a great big beautiful world out there
                  Brent in GA
                  Yamaha 80XS1100SG, HD Firefighter Special Edition 02 Road King, Honda 450 rat, 08 Buell 1125R tour modified, 83 goldwing parts bike gone-traded for XJ1100, 2014 HD electraglide police

                  Comment


                  • The vacuum advance was stuck at 20 deg advance, so that may have been the complete problem. I need to get the timing reset, adjust the carbs and try running it through the emission test again with just that fix...


                    Originally posted by BA80 View Post
                    IMHO the float level, idle mixture and sync would be the place to start.

                    BTW moto, the vacuum advance doen't come into play at idle so they would have to rev it to make it move. Unless it was running so badly that the idle had to be set up so the butterfly uncovered the vacuum oraface in the carb.
                    Guy

                    1980 XS1100G - Frankenstein - resurrected from the impound lot
                    1991 Suzuki GS500E (not running yet)
                    2003 Burgman AN400 - Blue Belle
                    2005 Burgman AN400 - Silver Belle

                    Comment


                    • Was the plate rusted or the diaphragm stuck? I've never seen one stick in the advance position before.

                      Is the centrifugal advance moving freely?
                      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


                      • The plate was corroded. The diaphragm was fine. I disconnected the diaphragm, sprayed silicon lubricant on the plate and exercised it several time until it moved freely, hooked the diaphragm back up and everything started working the way it was supposed to...

                        Originally posted by BA80 View Post
                        Was the plate rusted or the diaphragm stuck? I've never seen one stick in the advance position before.

                        Is the centrifugal advance moving freely?
                        Guy

                        1980 XS1100G - Frankenstein - resurrected from the impound lot
                        1991 Suzuki GS500E (not running yet)
                        2003 Burgman AN400 - Blue Belle
                        2005 Burgman AN400 - Silver Belle

                        Comment


                        • Funny it stuck in the advance position.

                          Just from experience I would recommend spraying a rust dissolver like WD40 the equivelent and working it and even let it sit for a while. Clean it out and repeat. Then the silicone.

                          If it was rusted enough to stick in the advance position, against the pressure of the return spring in the diaphragm, there is going to be some fairly heavy rust in there. If it doesn't work smoothly holler and I have several breaker plates laying around here. I'll send you one.

                          You never did answer about the centrifugal advance. Is it free?
                          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


                          • If I remember correctly the timing changed as rpm went up even with the vacuum disconnected, that's due to centrifugal advance unit correct?

                            it's going to be a few days to a week before I can get back to it...

                            Originally posted by BA80 View Post
                            Funny it stuck in the advance position.

                            Just from experience I would recommend spraying a rust dissolver like WD40 the equivelent and working it and even let it sit for a while. Clean it out and repeat. Then the silicone.

                            If it was rusted enough to stick in the advance position, against the pressure of the return spring in the diaphragm, there is going to be some fairly heavy rust in there. If it doesn't work smoothly holler and I have several breaker plates laying around here. I'll send you one.

                            You never did answer about the centrifugal advance. Is it free?
                            Guy

                            1980 XS1100G - Frankenstein - resurrected from the impound lot
                            1991 Suzuki GS500E (not running yet)
                            2003 Burgman AN400 - Blue Belle
                            2005 Burgman AN400 - Silver Belle

                            Comment


                            • Sounds like it's working. You should be able to turn the reluctor by hand with the engine off too sand see if it's working freely.
                              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


                              • Schming
                                I mounted my dyna coils in a very similiar manner a couple months ago. I really wanted them to mount in the stock locations. Not sure if you had to remove the horn, but I did. Probably not smart, but I have hated horns since I used to always hit it when I cancelled the turn signals on my VTX.

                                Yesterday I adjusted valves on both my F and SF, kinda. Was able to get shims from the local Kawi dealer for $3.50 a piece! When he grabbed his book for pricing I was thinking "damn, guess I'm ordering online and waiting a week". But to my surprise $3.50! So I only needed four for the F, and by the time I had the SF checked they had closed. I was able to get 7 adjusted on the SF with shims from the F and a parts bike. So just need to add one shim tomarro night.

                                Decided to polish the valve cover while it was off. After 45min of wet sanding I decided to paint it. I polished the timing cover last summer and it took 5 straight hours. 400 grit, 800, 1000, 1500, 2000, 2500, rubbing compound, polish. Didn't feel like spending 12 hours on all the contours of the valve cover. Going to paint it Gold. Should look good with the emerald/ gold tank and side covers and gold carb diaphram covers.
                                1979 XS1100 SF
                                1979 XS750 SF

                                Previous Rides:
                                1981 KZ650CSR
                                2006 VTX 1300C
                                1986 Radian 600

                                Comment

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