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    Help me fix my problem!

    Hi everyone,

    I'm new to the forum and I am here to ask a few questions about my bike. My dad owns a junkyard and I pulled out this awesome 81 GS650GL from storage last week. I have been tending to the bike for the last week doing routine maintenance to get this thing on the road. I have been working on the engine for some time now and I am at a point where I need to ask for some help. The engine is not running like how it should and I have created a youtube video describing the problem.

    It is a 10 minute video so I suggest skipping through it. At 2:30 I start demonstrating the engines odd behavior. Basically the engine dies when I give it full throttle or when I try and slowly raise the RPM's. At 8:30 I am filming the tach and showing how this motor behaves. Please check out the video link and offer some advice if you have an idea for why I cant get this thing dialed! Bike runs great and strong when you shoot starting fluid into the cylinders, I cant seem to get it running perfectly on the fuel system though. In the video you can see how the engine is cutting out under certain conditions. The link also has a good description of what I have observed about the engine. Thank you!

    - John
    Engine Diagnosis GS650.jpg

    #2
    Welcome to the forum. It's great to see young people take an interest in vintage Suzuki, or any motorcycles. Your first stop should be this thread
    Top 10 newbie mistakes

    But essentially, I'd be looking at, in this order:
    get manuals for your bike at BikeCliff's website (link in my sig)
    Valve adjustment. Because you probably don't know if they're in spec, and they need to be. (Ignore if already done).
    Thoroughly clean the carburetors. Because they're certainly not clean. Get tutorial on BikeCliff's website.
    Install the stock airbox(es) with a new airfilter.
    Assure no air leaks from either side of carbs and exhaust.
    You probably installed a new battery already, but you'll want to test the health of the charging system (posts ad nauseam on this site)
    Change the oil and filter.

    Create a signature with your bike year and model (then you'll never have to answer this question)
    post pics, we like pics (see link in my sig for using imgur to host pictures)
    Last edited by Rich82GS750TZ; 01-02-2020, 04:45 PM.
    Rich
    1982 GS 750TZ
    2015 Triumph Tiger 1200

    BikeCliff's / Charging System Sorted / Posting Pics
    Destroy-Rebuild 750T/ Destroy-Rebuild part deux

    Comment


      #3
      Welcome.

      First of all, that is NOT a 650GL, it is a 650G. And it's an '82.

      Before you kill the engine, stop torturing it and CLEAN the carbs. It is not running on all four cylinders.

      Because it starts very easily, I am guessing that the valve adjustment is not dangerously tight, but you should still check them, as the specified clearance is pitifully small.

      It sounds like it's running on two cylinders at idle (which should be closer to 1100 RPM). As you try to rev it up, it fails as you get past half throttle. That leads me to believe that your main jets are not clean. It would not surprise me at all to learn that a couple of pilot jets are clogged, too, which might be the source of poor running at idle.

      Do NOT buy "carb rebuild kits" to fix your carbs. Get a can of Berryman's carb cleaner dip and a set of o-rings from cycleorings.com. Download, read and FOLLOW this tutorial. It is the definitive guide to rebuild your carbs. Along the way, please remember that ANY shortcuts taken are merely opportunities to do it over and do it RIGHT.

      By the way, I did not see an airbox installed. THAT will account for not being able to rev the engine.

      .
      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


        #4
        So it's probably starving for fuel or got an over abundance of air, correct?
        1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

        2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

        Comment


          #5
          Looks like you don't have an airbox on it; at least I see daylight behind the carbs. It will not run right without something over the mount of the carbs.

          If the jetting is stock you need an airbox. If you go pods, you will need to richen up the mixture. But with nothing there you can put a rang over the mounts of the carbs and get it toi run better. Too much air flow with nothing.

          Comment


            #6
            back light the diaprams with a flashlight to look for pinholes. And note if they are nice and pliable or showing signs of starting to stiffen up. If diaprams are old and start getting hard the slides cant work well because they wont invert easily so slides can rise and fall correctly.
            MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
            1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

            NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


            I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

            Comment


              #7
              Originally posted by Rich82GS750TZ View Post
              Welcome to the forum. It's great to see young people take an interest in vintage Suzuki, or any motorcycles. Your first stop should be this thread
              Top 10 newbie mistakes

              But essentially, I'd be looking at, in this order:
              get manuals for your bike at BikeCliff's website (link in my sig)
              Valve adjustment. Because you probably don't know if they're in spec, and they need to be. (Ignore if already done).
              Thoroughly clean the carburetors. Because they're certainly not clean. Get tutorial on BikeCliff's website.
              Install the stock airbox(es) with a new airfilter.
              Assure no air leaks from either side of carbs and exhaust.
              You probably installed a new battery already, but you'll want to test the health of the charging system (posts ad nauseam on this site)
              Change the oil and filter.

              Create a signature with your bike year and model (then you'll never have to answer this question)
              post pics, we like pics (see link in my sig for using imgur to host pictures)
              Yea I think it is missing

              Comment


                #8
                Originally posted by posplayr View Post
                Looks like you don't have an airbox on it; at least I see daylight behind the carbs. It will not run right without something over the mount of the carbs.
                As posplayr mentioned, there has to be <something> ahead of the carbs. Yes, it takes a lot to mount the airbox (assuming you have one), but it's easy enough to prove the concept.

                Have one of your buddies take a shop rag, fold it in half and hold it over the carb intakes. Stretch it tight enough that it won't get sucked in. Start the bike and repeat your throttle exercises. It should rev better, but will still run like crap until you get the other two cylinders firing.

                .
                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


                  #9
                  <<delete duplicate>>
                  Last edited by Redman; 01-05-2020, 10:35 AM.
                  http://webpages.charter.net/ddvrnr/GS850_1100_Emblems.jpg
                  Had 850G for 14 years. Now have GK since 2005.
                  GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


                  https://imgur.com/YTMtgq4

                  Comment


                    #10


                    If tht is a 650, which it looks like;
                    Is 82 650G (I had one for 20+ years).
                    With the rear fender gone, and not seeing the front end its is harder to tell from a GL, but the tank and seat and bars do look like a G.
                    Listed in parts catalog as GS650GX , G for shaft drive, X for 1982 model year.

                    //////////QUOTE
                    Basically the engine dies when I give it full throttle or when I try and slowly raise the RPM's. . . . . . .
                    .... . . . . .. . . . . . Bike runs great and strong when you shoot starting fluid into the cylinders,

                    ///////////ENDQUOTE
                    that right there is classic symptoms of needing to do a good carb cleaning. And bye that I dont mean spray some carb cleaner here and there, I mean complete tear down, pull out all the jets and soak body and jets in carb cleaning dip for 20 - 24 hours each carb. Will take 4 - 5 days total if you have one carb dip bucket.

                    And... everything Steve said.

                    Get carb oring kit from Cycle ORing,and probably intake boot orings, ..... and probably a set of new bolts (allen head) because you will probably destroy most of the existing ones getting them out.
                    Last edited by Redman; 01-03-2020, 03:26 PM.
                    http://webpages.charter.net/ddvrnr/GS850_1100_Emblems.jpg
                    Had 850G for 14 years. Now have GK since 2005.
                    GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


                    https://imgur.com/YTMtgq4

                    Comment


                      #11
                      GS 650 GL 1982
                      Overall Length: 2 180 mm (85.8 in)
                      Overall Width: 870 mm (34.3 in)
                      Overall Height: 1 160 mm (45.7 in)
                      Seat Height: 740 mm (29.1 in)
                      Wheelbase: 1 450 mm (57.1 in)
                      Ground Clearance: 150 mm (5.9 in)
                      Dry Weight: 212 kg (466 lbs)
                      Engine type: Air-cooled 673 cc inline-4, SOHC, 8 valves. 73 hp (54 kW)/ 9.400 rpm, 57,2 Nm (5,88 kg-m)/ 8,000 rpm. Shaft drive.

                      Click on the image for larger format.
                      Here's more Suzuki GS650GL info.







                      GS 650 GT 1981
                      Overall Length: 2 170 mm (85.4 in)
                      Overall Width: 830 mm (32.7 in)
                      Overall Height: 1 170 mm (46.1 in)
                      Seat Height: 780 mm (30.7 in)
                      Wheelbase: 1 440 mm (56.7 in)
                      Ground Clearance: 160 mm (6.3 in)
                      Dry Weight: 213 kg (468 lbs)
                      Engine type: Air-cooled 673 cc inline-4, SOHC, 8 valves. 73 hp (54 kW)/ 9.400 rpm, 57,2 Nm (5,88 kg-m)/ 8.000 rpm. Shaft drive.

                      Click on the image for larger format.
                      Here's even larger picture.
                      http://webpages.charter.net/ddvrnr/GS850_1100_Emblems.jpg
                      Had 850G for 14 years. Now have GK since 2005.
                      GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


                      https://imgur.com/YTMtgq4

                      Comment


                        #12
                        Note: That is a britsh site, so shows color scemes of eurpoean models.
                        I was surprized to see 81 listed for 650G, since I think was 82-83-84 (in US anyway).

                        Yah, 650G/GL was pnly 3 years, and has some things unique to the 650. Where all the other models had most everything the same, the 650 had a few things particular to it only.
                        http://webpages.charter.net/ddvrnr/GS850_1100_Emblems.jpg
                        Had 850G for 14 years. Now have GK since 2005.
                        GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


                        https://imgur.com/YTMtgq4

                        Comment


                          #13
                          It's actually a Swedish site, run by a Finn, but the pictures are taken from brochures for Suzuki's various worldwide markets, and from owner submissions, and probably other sources as well. So the colour schemes could be from any market, but are predominately European.
                          1980 GS550ET

                          Comment


                            #14
                            Originally posted by Redman View Post
                            X for 1982 model year.
                            I believe X means 1981. 1982 is Z.
                            1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

                            2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

                            Comment


                              #15
                              IMG_20191223_144623761_HDR.jpg
                              Thanks guys for all the info. I have an order in for a new O ring kit and I will do a thorough job cleaning the carbs. I have removed the air intake boots and purchased new hardware for them. Do you guys have any advice for how to restore this rubber so I can have an easier time putting the carbs on? Also, can I soak the carbs in gasoline? Thank you I will let you all know how the bike is running next week.
                              Last edited by Guest; 01-05-2020, 01:19 AM.

                              Comment

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