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need help!!!!! bike wont run

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    #1

    need help!!!!! bike wont run

    I have 81gs850g and I just replaces intake manifold boots. Got it back together only runs on full choke and when you give it throttle it falls on face. Pulled jets out cleaned it pulled foot and needle valve off cleaned it still does it. Im lost. The carbs have plugs in bowl. Pulled them out cleaned it all still no improvement. Any ideas? Diaphrams are good. Any ideas?
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    #2
    Is the airbox installed, sealed, and complete with an air filter?
    1983 GS850G, Cosmos Blue.
    2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
    2015 Yamaha FJ-09, Magma Red Power Corrupts...
    Eat more venison.

    Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

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      #3
      No it not but it shouldny affect it that bad should it?

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        #4
        Originally posted by dstygg90 View Post
        No it not but it shouldny affect it that bad should it?
        Yes it will.

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          #5
          It will act EXACTLY as you have described.

          It will also make a BIG difference when you finally clean and rebuild the carbs.

          .
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          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
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            #6
            Sounds like those carbs and air box are extremely lean and restrictive from the factory. I bet an exhaust jet kit and pods really have a seat of the pants change?

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              #7
              Originally posted by dstygg90 View Post
              Sounds like those carbs and air box are extremely lean and restrictive from the factory. I bet an exhaust jet kit and pods really have a seat of the pants change?
              On a 550, not much of a change in power. The biggest difference will be the exhaust note. Not worth the trouble of re-jetting and tuning, IMHO.

              They are somewhat lean from the factory, in order to meet the emissions laws when they were built. The stock air box and filter work perfectly on a stock bike.

              Comment

                #8
                Originally posted by JJ View Post
                On a 550, not much of a change in power. The biggest difference will be the exhaust note. Not worth the trouble of re-jetting and tuning, IMHO.
                He has an 850, not a 550.


                You need to clean those carbs right, get a proper airbox (or rejet for pods) and get the valves properly adjusted. Won't run right until you get that done.
                http://img633.imageshack.us/img633/811/douMvs.jpg
                1980 GS1000GT (Daily rider with a 1983 1100G engine)
                1998 Honda ST1100 (Daily long distance rider)
                1982 GS850GLZ (Daily rider when the weather is crap)

                Darn, with so many daily riders it's hard to decide which one to jump on next.;)

                JTGS850GL aka Julius

                GS Resource Greetings

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                  #9
                  Originally posted by dstygg90 View Post
                  Sounds like those carbs and air box are extremely lean and restrictive from the factory. I bet an exhaust jet kit and pods really have a seat of the pants change?
                  No, it won't

                  Go up and read the My bike doesn't run well sticky
                  1978 GS 1000 (since new)
                  1979 GS 1000 (The Fridge, superbike replica project)
                  1978 GS 1000 (parts)
                  1981 GS 850 (anyone want a project?)
                  1981 GPZ 550 (backroad screamer)
                  1970 450 Mk IIID (THUMP!)
                  2007 DRz 400S
                  1999 ATK 490ES
                  1994 DR 350SES

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                    #10
                    Just hard to believe that not having the Airbox on it will cause it to basically not run at all.

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                      #11
                      I have the airbox its perfectly fine. It wasn't on bike when i get it. I replaced intake boots and o rings and was just starting it for first time. Bike is completely stock right down to clutch starter switch. Couldn't figure out why start button didn't work, pulled out my digital meter and traced to to a very worn clutch lever switch. Pulled headlight bucket off as Steve told me and bypassed it

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                        #12
                        Originally posted by dstygg90 View Post
                        Just hard to believe that not having the Airbox on it will cause it to basically not run at all.
                        It's not like the old carbureted cars, where removing the stock air cleaner restriction might be an improvement.

                        These bikes generally make more horsepower/cubic whatever than cars of the era; i.e., they're kind of high performance, and pickier about changes to their configuration.

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                          #13
                          Just every internal combustion engine I've ever dealt with has ever done this. idles at 3k under full choke and throttle blips make it fall on its face. Definitely starving for fuel

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