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  • #1

    Introduction

    Hi all,

    Last weekend I bought a 1978 XS Eleven that was already someones project.
    The bike has supposedly sat for years in a garage with 2445 original miles. The guy I bought it from had plans for it but started having children and never found the time. He was in the process of replacing the tank due to rust in the old one. He has periodically started and ran it using a gas can and length of fuel hose he has also changed all the fluids twice. He sold it to me with a replacement tank he found from Utah and a pair of clean petcocks with new gaskets. I have pulled apart and cleaned the sending unit and tested it to confirm it still works. I am in the process today of putting all the tank pieces back together and will add some fuel to verify no leaks then drain and mount back on the bike. As far as I can tell the bike has not been cut up or messed with much at all but it is in need of plenty of TLC.

    78 XS1100
    This is my first street bike and my first project bike. I'm sure we'll be spending a lot of time together.
    Tags: None
  • #2
    great score, you'll have a brand new machine once you get it back together
    1979 XS1100SF 37000km
    Green Dyna Coils
    Stainless Brake Lines

    1973 CB100
    kevXS

    Comment

    • #3
      Awesome! I got a few project XS bikes I can rebuild down the road.
      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

      • #4
        And..... starts won't run. Getting fuel to the carbs but.....what now? A lil squirt of start fluid gets it started but I cant keep it running.
        Pull the carbs?
        78 XS1100
        This is my first street bike and my first project bike. I'm sure we'll be spending a lot of time together.

        Comment

        • #5
          I mean, thats a lot to swallow. Carbs been rebuilt? Vacuum lines in good repair? Petcocks functioning?
          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

          • #6
            The petcocks are functioning. I don't think the carbs have been rebuilt and I'll check the vacuum lines.

            The fact that it starts with a squirt of starting fluid but won't stay running makes me think it's not getting fuel. Fuel is flowing from the petcocks when I manually apply vacuum. Maybe I should pull a float bowl and see if it has fuel? Any suggestions would be appreciated.
            78 XS1100
            This is my first street bike and my first project bike. I'm sure we'll be spending a lot of time together.

            Comment

            • #7
              My suggestion would be to do a complete carb rebuild foowing the forum's FAQ in the top banner of the page. After that, read the article entitled "Do you just bought a used bike", or something similar to that.
              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

              • #8
                Enrichment circuit clogged. Clean the carbs. "Clean" is not a very representative word for what a set of carbs require if those carbs spent years sitting with fuel in them.

                A much better word would be "agonize". If you want one of these bikes to run well, you better embrace the carbs. Lots of time and effort will pay off. Otherwise the bike is yard art.

                If the bike never had fuel filters and the tank did any amount of rusting, there will be lots of very small rust particles in every nook and cranny of the carbs. My 1982 XJ650 had lots of rust particles all over the carbs. The enrichment circuits were also all clogged. Its par for the course.
                82 XJ1100 - sold
                96 Honda Magna 750 - Girlfriend's bike
                2000 ZRX1100 - sold
                2003 FJR1300 - Silver rocket

                Comment

                • #9
                  Originally posted by iandmacdonald View Post
                  my suggestion would be to do a complete carb rebuild foowing the forum's faq in the top banner of the page. After that, read the article entitled "do you just bought a used bike", or something similar to that.
                  +1!.........
                  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

                  • #10
                    Thank's for the suggestions.
                    I pulled the carbs and using the Carb cleaning 101 thread here I managed to get the lower end of the carbs cleaned up. As you can see the fuel left in them had turned and only the #4 had new fuel in the bowl. I got everything cleaned up and back together then the bike started up easy. Lot's more to do but now there is light at the end of the tunnel. Here are a few pics I will update on the progress moving forward. Knowing the bike runs now I have more incentive to invest funds and time into getting it on the road.





                    78 XS1100
                    This is my first street bike and my first project bike. I'm sure we'll be spending a lot of time together.

                    Comment

                    • #11
                      Nice find!
                      Welcome aboard

                      Best of luck getting it up and running.
                      Looks like you've got a great start
                      81 SH Something Special
                      81 frame, 80 tank and side covers, 79 tail light and carbs, 78 engine, 750 final drive mod, Geezer rec/reg, 140 mains, LH wheels
                      ☺

                      79 SF MEAUQABEAUXS
                      81SH Nor'eas tah (Old Red)
                      80 LG Black Magic
                      78 E Standard Practice


                      James 3:17

                      If I can make at least one person smile, or pee their pants a little, or maybe spit out their drink; then my day is not wasted.

                      “Alis Volat Propriis”

                      Yamaha XS 1100 Classic
                      For those on FB

                      Comment

                      • #12
                        Welcome

                        Chedr.
                        That fuel system from tank bottom to engine needs to be spotless or it will give problems somewhere down the line.
                        I know it may run great but leave you on the side of the road later,(don't ask how I know this !)
                        Done };-)
                        76 XS650 C ROADSTER
                        80 XS650 G Special II
                        https://ibb.co/album/icbGgF
                        80 XS 1100 SG
                        81 XS 1100LH/SH DARKHORSE
                        https://tinyurl.com/k6nzvtw
                        AKA; Don'e, UD, Unca Don'e

                        Comment

                        • #13
                          Originally posted by donebysunday View Post
                          Chedr.
                          That fuel system from tank bottom to engine needs to be spotless or it will give problems somewhere down the line.
                          I know it may run great but leave you on the side of the road later,(don't ask how I know this !)
                          Done };-)
                          Absolutely. My short fast goal was to see if the bike even ran. Now that I know it will I am exited to to spend the winter thoroughly going over the bike to learn all about it and make sure all is up to par. It will be a fun way to relax and get my mind off the troubles of the world. For me this is therapeutic.
                          Last edited by Chedr; 10-13-2016, 07:57 AM.
                          78 XS1100
                          This is my first street bike and my first project bike. I'm sure we'll be spending a lot of time together.

                          Comment

                          • #14
                            You

                            may have a different approach but I made sure the petcocks did not leak then a bottle of Chevron Techron in the tank (not Chevron with Techron, weaker). Topped it off with non ethanol and let it sit on the shelf for a month. My troubles were gone after that.
                            76 XS650 C ROADSTER
                            80 XS650 G Special II
                            https://ibb.co/album/icbGgF
                            80 XS 1100 SG
                            81 XS 1100LH/SH DARKHORSE
                            https://tinyurl.com/k6nzvtw
                            AKA; Don'e, UD, Unca Don'e

                            Comment

                            • #15
                              What problems did it solve? Did that clean up your carbs?
                              78 XS1100
                              This is my first street bike and my first project bike. I'm sure we'll be spending a lot of time together.

                              Comment

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