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    #1

    Need some help!!

    SO I have an idle problem. Its not terrible, but ive done some searching and havent had any luck for my specific idle problem. My repair manual isn't very helpful in regards to fixing it either.

    First off bike is very hard to start, usually takes some throttle to get her going. Not sure if there is a big hint there or not.

    When the bike finally starts it fires right up and will settle into a nice idle after it warms up. However my idle speed screw is on the lowest setting. So when i pull the choke out a bike the idle speeds up to around 3k while all the way out and i cant turn it down with the screw. Its making the bike difficult to ride, im very new to motorcycle mechanics and would appreciate if someone has a blindingly simple solution, which im guessing there is.. lol

    Thanks! and if you have a noob comment to make, save it I know Im a noob.
    Tags: None
    #2
    What bike are you working on?

    Usually hard to start is due to tight valves, when was the last time you checked/adjusted them?

    Have the carbs been properly cleaned?

    Once valves are adjusted and carbs are clean then you can start to make adjustments.

    Air leaks...have you changed the carb intake o-rings if your bike has them?

    Comment

      #3
      Originally posted by Bune Duggy View Post

      When the bike finally starts it fires right up and will settle into a nice idle after it warms up. However my idle speed screw is on the lowest setting. So when i pull the choke out a bike the idle speeds up to around 3k while all the way out and i cant turn it down with the screw. Its making the bike difficult to ride, im very new to motorcycle mechanics and would appreciate if someone has a blindingly simple solution, which im guessing there is.. lol
      That's how the choke works, it's not actually a choke at all, rather an enrichment circuit that adds fuel and air. It will idle a lot higher with the choke on. Almarconi is right, adjust the intake and exhaust valves, that's usually the cause of hard starting.
      I'm a little confused, usually about half choke is all you need even in very cold weather, why would you pull it all the way out?
      Most of them won't even run that way.
      http://img.photobucket.com/albums/v5...tatesMap-1.jpg

      Life is too short to ride an L.

      Comment

        #4
        Yes, what bike? New bike to you ?Is the weather getting colder where you are?
        "idle speed screw is on its lowest setting" - this screw is where???
        I use full " choke" to start ( but no throttle), but quickly drop it almost all the way to keep revs below 3000 rpm.If I left "choke" on half way, my bike would stumble on acceleration.
        1981 gs650L

        "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

        Comment

          #5
          Greetings and Salutations!!

          Hi Mr. Bune Duggy,

          You'll find lots of GS lovin' on my little website. Please let us know what bike you have (add it to your sig file). Follow the suggested maintenance lists in the links below and your bike will be "golden". Welcome.

          I just stopped by to welcome you to the forum in my own, special way.

          If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

          Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", the Carb Rebuild Series, and the Stator Papers. Now let me roll out the welcome mat for you...

          Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

          Thanks for joining us. Keep us informed.

          Thank you for your indulgence,

          BassCliff
          Last edited by Guest; 10-28-2010, 03:42 PM.

          Comment

            #6
            My mistake! The bike is an '81 GS850 (not sure which model). I picked it up for $445 with a helmet and jacket included.

            I guess getting a feeler guage to check valves and cleaning the carbs are on the agenda. I was hoping to fix the idle issue it would be something simple that i was overlooking. Seems as though ill have to dig a little deeper.

            Does anyone else expirience problems starting this bike? It seems as though there is a LOT of compression, which i guess could be a valve issue. The starter sucks the battery before i can get it to fire, so jumper cables are usually required which also will turn the starter faster enough to make it fire.

            So the high idle could be due to something like a dirty idle jet?

            Thanks for the quick replies!

            Comment

              #7
              Also in regards to the choke on this bike i am not very familiar to how it works. The guy i bought it from didn't even have a choke cable installed. So i just got one from the parts store and installed it, in other words have no idea what a good setting would be. Im used to having the button all the way in to start, and then once its warm pull it all the way out for riding. Sounds like thats not the case with these bikes?

              Comment

                #8
                How are you using the jumper cables? Hopefully from a non-running vehicle. Sounds like you need to do what Almarconi and Tkent said then go through your charging system and make sure everything is okay.
                Cowboy Up or Quit. - Run Free Lou and Rest in Peace

                1981 GS550T - My First
                1981 GS550L - My Eldest Daughter's - Now Sold
                2007 GSF1250SA Bandit - My touring bike

                Sit tall in the saddle Hold your head up high
                Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
                and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

                Comment

                  #9
                  Hi,

                  Tight valve clearances can make your bike hard to start when cold. Clean the carbs, adjust the valves, clean electrical connections, check the charging system, etc. It's all in your "mega-welcome". Fix it right, the first time, and you won't have to be continually chasing down all these inconvenient little problems as you are trying to ride.


                  Thank you for your indulgence,

                  BassCliff

                  Comment

                    #10
                    Originally posted by Bune Duggy View Post
                    Also in regards to the choke on this bike i am not very familiar to how it works. The guy i bought it from didn't even have a choke cable installed. So i just got one from the parts store and installed it, in other words have no idea what a good setting would be. Im used to having the button all the way in to start, and then once its warm pull it all the way out for riding. Sounds like thats not the case with these bikes?
                    Any choke/enrichener system I've ever used and it's the same on these bikes, the choke is pulled out to start the bike, this puts more fuel in as it warms up, then push the choke in as the speed increases. The idle speed is then reduced, and when the choke is all the way in it should idle normally (of course then you'll have to adjust the idle speed using that little knurled screw below the carbs to set it properly at about 850-1000rpm). Oh yeah, don't twist the throttle as you're starting it, it will defeat the enrichener circuit and it'll be harder to start also.

                    Comment

                      #11
                      Originally posted by Bune Duggy View Post
                      Also in regards to the choke on this bike i am not very familiar to how it works. The guy i bought it from didn't even have a choke cable installed. So i just got one from the parts store and installed it, in other words have no idea what a good setting would be. Im used to having the button all the way in to start, and then once its warm pull it all the way out for riding. Sounds like thats not the case with these bikes?
                      Confusion! Standing on left side of bike ( side with gear shifter) looking at carbs, when you activate "choke" lever a rod at top of carbs moves towards you ( this rod connects to all four carbs). This enriches the mixture and makes for easy start; after starting, this gets pushed back (maybe in increments). Basscliff will have 8 by 10 glossy pic of this area!
                      1981 gs650L

                      "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

                      Comment

                        #12
                        Hi,

                        The choke on my bike is in the dash area, just below the gauges, between the handlebars. I pull it out to activate it. The idle increases as the bike warms up so I push the choke button in to lower the idle. Is yours the same or is it on the left handlebar control?



                        There are lots of pictures in my Air Intake Repair guide on my website. Here are a couple of supplemental pictures to point out the choke assembly. Below is the left side of the bike, the clutch hand side.



                        Below is the engine side of the carbs.




                        Thank you for your indulgence,

                        BassCliff
                        Last edited by Guest; 10-28-2010, 07:42 PM.

                        Comment

                          #13
                          Uh, BassCliff, those were only 5x7s.

                          We were promised 8x10s.


                          Originally posted by tom203 View Post
                          ... Basscliff will have 8 by 10 glossy pic of this area!
                          .
                          sigpic
                          mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
                          hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
                          #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
                          #2 son: 1980 GS1000G
                          Family Portrait
                          Siblings and Spouses
                          Mom's first ride
                          Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
                          (Click on my username in the upper-left corner for e-mail info.)

                          Comment

                            #14
                            Originally posted by Steve View Post
                            Uh, BassCliff, those were only 5x7s.

                            We were promised 8x10s.
                            LOL!

                            It's easy to resize them when they're digital.


                            Thank you for your indulgence,

                            BassCliff
                            Last edited by Guest; 10-29-2010, 01:29 PM.

                            Comment

                              #15
                              Ok so i guess thats why I could be having trouble starting it! Since i purchased it with no choke cable, i was used to starting it with no choke (button all the way down). Ill give it a try tomorrow and try starting it with the button all the way out.. choke ON. Should be a lot easier

                              Im still going to adjust valves and clean carb. I wanna ride this beast to its potential!

                              What choke setting is most typical for riding? Cuz with the choke all the way in, the bike stumbles under acceleration (I have yet to ride it with the new cable installed. Im guessing maybe half way in hopefully?

                              I appreciate the help guys

                              Comment

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