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Thread: Idle/stalling

  1. #1
    Join Date
    May 2021
    Location
    Vancouver bc
    Posts
    1

    Default Idle/stalling

    Hi Iím new to the forum! Glad I found it, I just picked up a 1980 GS550E. I got it started with the choke on and would stall immediately once pushed back in (or keep reving it) Pulled the carbs and sprayed some carb cleaner into the jets and put it back on and same thing. Pulled them off again and pulled the plugs off the pilot jets to access them (what are those plugs for?) took them out and inspected them for clogs, looked fine. I really donít want to put them back on again until they are done right. Iíve ordered a carb kit and waiting until they arrive before I do anything. Is there something that typically causes these symptoms? Thanks!

  2. #2
    Join Date
    Jun 2018
    Location
    Mifflinburg, PA / Land of Tar & Chip
    Posts
    2,642

    Default

    See top 10 Newbie mistakes thread linked in my signature. Give that a good read-through. Lots of good articles on BikeCliffs website, including an excellent tutorial on how to properly clean and rebuild BS (CV) type carbs.

    welcome to the forum.

  3. #3
    Join Date
    Sep 2019
    Location
    Denver Colorado
    Posts
    10

    Default

    Best of luck with the carb rebuild kit. I haven't had much luck with replacing the jets themselves with 3rd party ones, usually it doesn't deliver the exact same amount of mixture.

    Have you tried adjusting the fuel/air mix screw? Or the idle adjustment screw if it requires throttle to keep it alive.

  4. #4
    Join Date
    Jan 2011
    Location
    NoMo, MN
    Posts
    3,411

    Default

    Quote Originally Posted by Trolleywire View Post
    Hi Iím new to the forum! Glad I found it, I just picked up a 1980 GS550E. I got it started with the choke on and would stall immediately once pushed back in (or keep reving it) Pulled the carbs and sprayed some carb cleaner into the jets and put it back on and same thing. Pulled them off again and pulled the plugs off the pilot jets to access them (what are those plugs for?) took them out and inspected them for clogs, looked fine. I really donít want to put them back on again until they are done right. Iíve ordered a carb kit and waiting until they arrive before I do anything. Is there something that typically causes these symptoms? Thanks!
    Spend a couple of weeks (minimum) reading this forum. Learn about your bike before laying a hand on it. A 40 year old bike needs a fair bit of maintenance and a number of parts replaced, there are known problems with all these bikes and known fixes. Please do not ride this thing without doing the maintenance.
    Carb kits are close to useless! Clean your carbs and the jets, etc. using the tutorials, you only need to replace the o-rings..
    And one other thing .... the PO is a liar!!! Good luck.
    -Mal

    "The only reason for time is so that everything doesn't happen at once." - B. Banzai
    ___________

    78 GS750E

  5. #5
    Join Date
    Aug 2010
    Location
    Sebago,Maine
    Posts
    8,647

    Default

    Yes, forget the carb kits.....except for the o-rings, stock jetting stuff will be fine. Your carbs need to be thoroughly cleaned, i.e. dismantled, and dipped/soaked. Otherwise youíre wasting time.
    1981 gs650L

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

  6. #6
    Join Date
    Nov 2019
    Location
    spring hill florida
    Posts
    1,272

    Default

    A carb rebuild will do you good, all internal parts are interchangeable between carbs but you will need to number or atleast be able to distinguish carb 1-4 so they are out back on the rack correctly. Dont use the rebuild kit just get a good clean on these ones, but the rubber rings could definitely be replaced.

    Also, valve adjustment, very important for these bikes, and actually very easy too.
    Bike uses shim valves so all you do is change out a shim for the corresponding size, and actually to replace it, all you need is a ziptie and tweezers (excluding getting the valve cover off). Get a valve cover gasket to be safe, if the last valve adjustment was done right and recent enough, you might be able to reuse it and hold onto the new one, and you might even get lucky and not have to adjust any valves.


    Hope all goes well, I wish that's all I had to do for mine!
    Ian

    1982 GS650GLZ

    Want a "twin" for my bike

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