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Thread: Stupid stupid stupid

  1. #1
    Join Date
    Nov 2019
    Location
    spring hill florida
    Posts
    1,321

    Default Stupid stupid stupid

    That's me ranting about this bike, I got to turn the bike on today, and had to do a half turn out ti get it running better, wasnt gonna sit here and try to tune it being 7:30am.

    The initial start before messing with the pilot screws it sounded okay at first, got worse as it got warmer, and the throttle response was not good you could tell it wasnt running on all the cylinders. The warmer it got the more I'd have to turn the idle up.

    Turned pilot screws out half a turn and it got better, could idle stabile and no shorting was happening so that issue should be gone, I did a spray test and cylinders 1 through 3 steamed up just fine, cylinder 4 barely steamed. Went ahead and rode it just to see how it'd act during a ride and low speed rpm was not good, its barely want to go, and when I get to a certain rpm I'd say above 3000 it will stay up there during a shift, maybe try to climb a bit more, sometimes it would jerk me after i pull the clutch out from an upshift, as a matter of fact it would jerk around a noticable amount during those low speed rpms. The good thing is when I'd stop o wouldn't have to hold on the throttle to make sure it would stay alive, it was able to idle by itself during the ride. Sometimes it would go up about 200ish rom from idle and I'm thinking maybe that's the fourth cylinder going, but it would eventually start to climb up constantly. I also had it keep going by itself after I let off the throttle.

    My thoughts, the idle screws need to be messed with to get a better tune low speed, the throttle cable might be getting friction somewhere causing it to stick a bit, and, maybe something to do with the clutch? This clutch has always been super easy to operate, but damn does it clunk a bit during shifting at low speeds.

    The carbs have been rebuilt very recently, the floats were weighed and float height was set. My ignition system is all new, coils, dyna S, plugs, leads, and the coil relay mod has been done. I just have an exhaust on it. Everything that has been done has been tested to prove good.

    What are stupid things that could be happening.

    Stupid stupid stupid,
    Ian

    1982 GS650GLZ
    1982 XV750

    Got a twin

  2. #2
    Join Date
    Nov 2019
    Location
    spring hill florida
    Posts
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    Default

    Forgot to add did a steam test after ride and all 4 sizzle the same
    Ian

    1982 GS650GLZ
    1982 XV750

    Got a twin

  3. #3
    Join Date
    May 2017
    Location
    ohio
    Posts
    243

    Default

    Most Suzuki transmissions from that period were pretty clunky. especially at low speeds.
    Expecting the Spanish Inquisition
    1981 GS850G: the Ratzuki
    1981 GS1100E

  4. #4
    Join Date
    Jun 2013
    Location
    Norfolk, Virginia
    Posts
    1,475

    Default

    Have you set valve clearances? Vacuum synch the carbs?

    1982 GS850GLZ
    1983 GS750ED-Horsetraded for the Ironhead
    1981 HD XLH

    Drew's 850 L Restoration

    Drew's 83 750E Project

  5. #5
    Join Date
    Nov 2019
    Location
    spring hill florida
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    1,321

    Default

    Quote Originally Posted by jsandidge View Post
    Have you set valve clearances? Vacuum synch the carbs?
    Only thing is carb sync to do.....will do
    Ian

    1982 GS650GLZ
    1982 XV750

    Got a twin

  6. #6
    Join Date
    Nov 2019
    Location
    spring hill florida
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    Default

    What are my low speed jets I'd say to 3000 ish rpm
    Ian

    1982 GS650GLZ
    1982 XV750

    Got a twin

  7. #7
    Join Date
    Nov 2019
    Location
    spring hill florida
    Posts
    1,321

    Default

    Ome thing with the carbtune is I cant really get a reading at idle on it, I used to be able to but now I cant. I'm gonna look for leaks but i dont believe it does have any. I know how it works, I'm wondering if it needs lubrication but I dint know how I'd do that.
    Ian

    1982 GS650GLZ
    1982 XV750

    Got a twin

  8. #8
    Join Date
    May 2011
    Location
    Vancouver
    Posts
    4,867

    Default

    I don't believe the CarbTune requires any lubrication. In fact, I think they say specifically NOT to in the manual, IIRC.
    '83 GS650G
    '83 GS550es (didn't like the colours in the 80's, but they've grown on me)

  9. #9
    Join Date
    Nov 2019
    Location
    spring hill florida
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    Default

    Quote Originally Posted by BigD_83 View Post
    I don't believe the CarbTune requires any lubrication. In fact, I think they say specifically NOT to in the manual, IIRC.
    Any clue why it wont get a reading during idle, have to rev it up for them to come out but still that probably isnt an accurate way to use it.
    Ian

    1982 GS650GLZ
    1982 XV750

    Got a twin

  10. #10
    Join Date
    May 2011
    Location
    Vancouver
    Posts
    4,867

    Default

    Shoot us a picture of your Carbtune setup. I recall idle having to be quite high (~2500) to get an initial reading and as the synch got better I could bring the rpms down. It was also easier using the restrictors that came with the kit.
    '83 GS650G
    '83 GS550es (didn't like the colours in the 80's, but they've grown on me)

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