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  • #31
    Carbon Fouled

    Your are discribing carbon fouled plugs, a hotter plug could help, especialy consiidering your location. Also, check your coil output is OK. If your air filter is good and clean, your mix screws might be set to rich, The more time you idle the more this will build up on your plugs if running to rich a setting on your mix screws

    Originally posted by anarchy18 View Post
    Hey, pulled the plugs they were black and sooty but dry!!! I'll definately check out that vent hole on the tank but I also think its time to pull my carbs and inspect em.
    1979 XS1100 Special (Mad Max, OEM) Current
    1980 XS1100 Special
    1990 V Max
    1982 KZ750 LTD Twin
    1986 700 FZR Yamaha Fazer (faster then expected)
    1979 XS750 Special (my 1st Special)
    1974 CB750-Four



    Past/pres Car's
    1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

    Comment


    • #32
      Well I checked for spark and ALL 4 plugs had a nice strong spark. Not sure what the primary and secondary ohm readings should be for the coils? I guess the simplest way would be just make sure that they both have the same readings. I dont think I have the original coils anyways TopCat told me which ones I have after I took some pics but I forgot. I can check em easliy now tho the tanks off cause Im getting ready to pull the carbs if I could figure out how to take the carbs out that is?

      Read in the repair section in the forums something about a v-shaped something I'm supposed to slide after loosening some bolts to remove the carbs easily and that I should NOT do it the way the manual says? I was prying on em but they didnt wanna come out, I;m scared to damage a rubber boot. Never been up in the carbs on this bike im curious to see how she is jetted. Im popping a new Air Filter in also.

      If I go with hotter plugs which ones would you try? Can you just play with different heat ranged plugs harmlessly?

      Also noticed my #2 carb is leaking!!!!!!!!!!!

      When I park her overnight I try to turn my petcocks to a position to where they are OFF but im pretty sure they leak!!! I have forgotten before and had my airbox fill up with fuel atleast twice in the last half year, NOT GOOD It could be very well that just my air filter is not any good anymore from getting soaked up with fuel a couple times? The whole road was full of oil mixed with fuel. Ever since my expensive oil (costs alot here in Europe) change I try not to forget to turn those petcocks to a postion to where they are as closed as they are gonna get!!!
      Last edited by anarchy18; 12-05-2011, 12:26 PM.
      '81 Yamama XS1100 5K7 German Model

      What's the difference between erotic and kinky?
      Erotic = using a feather
      Kinky = using the whole chicken

      Comment


      • #33
        Oops how do I delete a post?

        BTW i found a good carb removal tutorial so I'm gonna head outside and try it right now!
        Last edited by anarchy18; 12-05-2011, 12:59 PM.
        '81 Yamama XS1100 5K7 German Model

        What's the difference between erotic and kinky?
        Erotic = using a feather
        Kinky = using the whole chicken

        Comment


        • #34
          I run NGK BP-6ES year round here in Florida, as cold as you say it is there, I would try NGK BP-4ES and keep and clean your current plugs for summer. As to removing the carbs, I have an SF, so don't know if your bike is the same, if so, I just remove all the bolts holding the airbox to the frame, loosen the clamps around the rubber airbox to carb tubes, remove the air filter and cover, pop the barcket on top the airbox over the slide and downward (where it was bolted on top to the frame) Pull the airbox back and off the carbs, then down and back as far as it will go. Loosen the clamps on the intake manifolds, pull the carbs back and off, pop the throttle and clutch cable out of the clips. Carfuly slide the carbs out (needs a little wiggleing up and down as you go, just look and see where they are bumping as you pull them out) I unhook the throttle cable from the carbs when half way out, but if you can get to yours before then, great)

          Originally posted by anarchy18 View Post
          Well I checked for spark and ALL 4 plugs had a nice strong spark. Not sure what the primary and secondary ohm readings should be for the coils? I guess the simplest way would be just make sure that they both have the same readings. I dont think I have the original coils anyways TopCat told me which ones I have after I took some pics but I forgot. I can check em easliy now tho the tanks off cause Im getting ready to pull the carbs if I could figure out how to take the carbs out that is?

          Read in the repair section in the forums something about a v-shaped something I'm supposed to slide after loosening some bolts to remove the carbs easily and that I should NOT do it the way the manual says? I was prying on em but they didnt wanna come out, I;m scared to damage a rubber boot. Never been up in the carbs on this bike im curious to see how she is jetted. Im popping a new Air Filter in also.

          If I go with hotter plugs which ones would you try? Can you just play with different heat ranged plugs harmlessly?

          Also noticed my #2 carb is leaking!!!!!!!!!!!

          When I park her overnight I try to turn my petcocks to a position to where they are OFF but im pretty sure they leak!!! I have forgotten before and had my airbox fill up with fuel atleast twice in the last half year, NOT GOOD It could be very well that just my air filter is not any good anymore from getting soaked up with fuel a couple times? The whole road was full of oil mixed with fuel. Ever since my expensive oil (costs alot here in Europe) change I try not to forget to turn those petcocks to a postion to where they are as closed as they are gonna get!!!
          1979 XS1100 Special (Mad Max, OEM) Current
          1980 XS1100 Special
          1990 V Max
          1982 KZ750 LTD Twin
          1986 700 FZR Yamaha Fazer (faster then expected)
          1979 XS750 Special (my 1st Special)
          1974 CB750-Four



          Past/pres Car's
          1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

          Comment


          • #35
            Originally posted by XS1100_OEM4ME View Post
            I run NGK BP-6ES year round here in Florida, as cold as you say it is there, I would try NGK BP-4ES and keep and clean your current plugs for summer. As to removing the carbs, I have an SF, so don't know if your bike is the same, if so, I just remove all the bolts holding the airbox to the frame, loosen the clamps around the rubber airbox to carb tubes, remove the air filter and cover, pop the barcket on top the airbox over the slide and downward (where it was bolted on top to the frame) Pull the airbox back and off the carbs, then down and back as far as it will go. Loosen the clamps on the intake manifolds, pull the carbs back and off, pop the throttle and clutch cable out of the clips. Carfuly slide the carbs out (needs a little wiggleing up and down as you go, just look and see where they are bumping as you pull them out) I unhook the throttle cable from the carbs when half way out, but if you can get to yours before then, great)
            Ya i needa add some pics of my bike. In the words of Good Ol (VERY HELPFUL HELPFUL HELPFUL DUDE) TopCat. I have...

            ..."a hybrid of both the standard(tank) and special(forks/gauges,etc.) along with a few from the XJ11 model, the swirly wheels, front calipers, linked brakes, etc.!"

            And accroding to my paperwork here in Germany, its a XS 1100 S 5K7 1981-82 Sport Model.

            '81 Yamama XS1100 5K7 German Model

            What's the difference between erotic and kinky?
            Erotic = using a feather
            Kinky = using the whole chicken

            Comment


            • #36
              Carbs

              Did you get the carbs off OK? What link on the site did you follow? The main thing is to try not to distort the intake manifolds, not too bad if new, but can increase cracking in the rubber if getting old.
              1979 XS1100 Special (Mad Max, OEM) Current
              1980 XS1100 Special
              1990 V Max
              1982 KZ750 LTD Twin
              1986 700 FZR Yamaha Fazer (faster then expected)
              1979 XS750 Special (my 1st Special)
              1974 CB750-Four



              Past/pres Car's
              1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

              Comment


              • #37
                As far as plugs go, I know these aren't factory, but I've always found the Champions to be a lot more forgiving when things periodically change, if fact even if I'm running NGK's, I always keep a few spare Champions for my backup supply. My old xj1100 I use to have was having oil on the plug issues, and a Champion would get where I had to go a lot longer than a NGK would till I got the problem resolved....sigh...how I miss that bike.
                81 XS1100H

                Comment


                • #38
                  Originally posted by XS1100_OEM4ME View Post
                  Did you get the carbs off OK? What link on the site did you follow? The main thing is to try not to distort the intake manifolds, not too bad if new, but can increase cracking in the rubber if getting old.
                  Unfortunately the dark the rain and the wind drove me in this evening. Im half a day ahead of u guys so its about midnight right now and I need sleep. Ill get back with you ASAP and let you know why the #2 carb is leaking, I already know that my petcocks are leaking very slowly so thats part of it. And I hope I do end up being able to figure out how to get the carbs out? I found the tutorial that was written by Maans Smit in the maintenance section here in the Forum. Wasnt able to find your NGK BP-4ES plug either on German Ebay here either. I'll hit the autoparts store tomorrow. Trying out different heat rages is ok for my motor? Ill put in new plugs,new airfilter, play with my carb settings and let know know what happens. So can I sync and adjust the pilot screws without having to take anything else off but the gas tank? CAUSE MY TANKS OFF AND I COULDNT SEE ANY SCREWS THAT WERE ACCESSIBLE ON THE CARB LOOKING DOWN IN THE THERE!!!
                  '81 Yamama XS1100 5K7 German Model

                  What's the difference between erotic and kinky?
                  Erotic = using a feather
                  Kinky = using the whole chicken

                  Comment


                  • #39
                    When yer pulling the carbs it helps a lot if the rubber parts holding the carbs are warm. If the area yer using is unheated, try warming them with a hair dryer until they soften a little.

                    It sounds like yer carbs and fuel tank need a good cleaning and it wouldn't hurt to replace the fuel lines if they are old. A lot of junk can slough off the inside of an old line and end up in the carb, holding the float needle open and allowing the gas to flow freely into yer airbox and washing down the cylinders.

                    Triple clean the carbs, use Evaporust to clean yer tank, synch the carbs and I'll bet you'll have a fine running machine. Good luck!

                    This thread needs a pic. How about an old-timey shot of a hot chick on an old motorsickle!

                    Comment


                    • #40
                      Advise you stay with the stock BP6ES NGK plug and figure out what the REAL issue is. I run the stock plug/coils with no issue..........even @ -25F..........just sayin'.........
                      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


                      • #41
                        Originally posted by anarchy18 View Post
                        Ya i needa add some pics of my bike. In the words of Good Ol (VERY HELPFUL HELPFUL HELPFUL DUDE) TopCat. I have...

                        ..."a hybrid of both the standard(tank) and special(forks/gauges,etc.) along with a few from the XJ11 model, the swirly wheels, front calipers, linked brakes, etc.!"

                        And accroding to my paperwork here in Germany, its a XS 1100 S 5K7 1981-82 Sport Model.

                        hi anachy,
                        in a previous post i told u that our sports bikes are different to the
                        us market specials, especially the carb set up, if u strip the carbs down
                        take note of the jet sizes and the clip position on the slide needle.
                        over here the clip position works best in the 2nd position from the top.(lean)
                        with regards to running a hotter plug id only go hotter by one, use a bp5es.
                        btw our bikes dont have a link brake set up like the xj's or the mns,
                        and our tanks are similar to the special, not the standard.
                        pete


                        new owner of
                        08 gen2 hayabusa


                        former owner
                        1981 xs1100 RH (aus) (5N5)
                        zrx carbs
                        18mm float height
                        145 main jets
                        38 pilots
                        slide needle shimmed .5mm washer
                        fitted with v/stax and uni pod filters

                        [url]http://www.youtube.com/watch?v=3pA8dwxmAVA&feature=mfu_in_order&list=UL[/url]

                        Comment


                        • #42
                          What

                          That left "NAKED" leg in that photo still has my head spinning (and I can't say wich head I am talking about) How dare you do this at Christmas And in Black and White, how wrong, don't you know if you use" Black & white" on the web, that is racest Love you all, God bless

                          Originally posted by Shacknasty View Post
                          When yer pulling the carbs it helps a lot if the rubber parts holding the carbs are warm. If the area yer using is unheated, try warming them with a hair dryer until they soften a little.

                          It sounds like yer carbs and fuel tank need a good cleaning and it wouldn't hurt to replace the fuel lines if they are old. A lot of junk can slough off the inside of an old line and end up in the carb, holding the float needle open and allowing the gas to flow freely into yer airbox and washing down the cylinders.

                          Triple clean the carbs, use Evaporust to clean yer tank, synch the carbs and I'll bet you'll have a fine running machine. Good luck!

                          This thread needs a pic. How about an old-timey shot of a hot chick on an old motorsickle!

                          1979 XS1100 Special (Mad Max, OEM) Current
                          1980 XS1100 Special
                          1990 V Max
                          1982 KZ750 LTD Twin
                          1986 700 FZR Yamaha Fazer (faster then expected)
                          1979 XS750 Special (my 1st Special)
                          1974 CB750-Four



                          Past/pres Car's
                          1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                          Comment


                          • #43
                            Originally posted by Shacknasty View Post
                            When yer pulling the carbs it helps a lot if the rubber parts holding the carbs are warm. If the area yer using is unheated, try warming them with a hair dryer until they soften a little.

                            It sounds like yer carbs and fuel tank need a good cleaning and it wouldn't hurt to replace the fuel lines if they are old. A lot of junk can slough off the inside of an old line and end up in the carb, holding the float needle open and allowing the gas to flow freely into yer airbox and washing down the cylinders.

                            Triple clean the carbs, use Evaporust to clean yer tank, synch the carbs and I'll bet you'll have a fine running machine. Good luck!

                            This thread needs a pic. How about an old-timey shot of a hot chick on an old motorsickle!

                            COOL DUDE!!! AWESOME PIC YOUR RIGHT!!! Changes everything

                            I have inline filters so there better not be no junk from the tank up in the Carbs!

                            Hey dont forget I'm in Germany when you start talkin american products, we dont have most of em!!!! For example I always wanted to try seafoam or rustoleam paint but we dont have them nor Evaporust
                            Last edited by anarchy18; 12-06-2011, 02:13 AM.
                            '81 Yamama XS1100 5K7 German Model

                            What's the difference between erotic and kinky?
                            Erotic = using a feather
                            Kinky = using the whole chicken

                            Comment


                            • #44
                              That really sucks because Evaporust really rocks! Running two filters can lead to fuel starvation on occasion. Are the filters flowing properly? Pull off the fuel lines and let 'em run into a bucket for a few. See if the fuel slows down or remains steady. Like Cobia said, check the fuel tank vent.

                              Comment


                              • #45
                                May sound kinda 'out there', but may wanna pull off that left side ignition cover and tug on the pick-up coil wires in sections.........sheaving/insulation stretches.......broken wire. A simple check may keep you from chasing your tail in the future anyways......JAT.
                                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

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