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79' GS550 Will run on starter fluid but die after a few seconds

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    #1

    79' GS550 Will run on starter fluid but die after a few seconds

    My bike will run when I spray starter fluid for about a few seconds and then die. Would love some help troubleshooting if anyone has any ideas.

    Here's some info on it:
    • Just resealed the gas tank with por 15.
    • Cleaned the carbs
    • Cleaned the petcock
    • Tested to see if the vacuum worked and gas did indeed come out when I kicked it.
    • Makes a sort of higher pitched noise when I try and give it gas.
    • Might've accidently screwed with the jet positioning when I cleaned it.
    What else should I check to make sure gas is getting to my carbs? Is it possible to clean the fuel line to the carb and where the gas goes immediately after the tube?
    Should I try and retune the carbs and how would I do that?
    Tags: None
    #2
    Top 10 Newbie Mistakes - The GSResources Forums
    https://www.thegsresources.com/_forum/forum/technical-forums/general-maintenance/46923-top-10-newbie-mistakes?t=171846
    1A) (NEW) Trying to diagnose running problems on a bike with an unknown maintenance history. Common maintenance items like clean carbs, properly adjusted valves, no air leaks in the intake system (airbox, carb boots), a clean gas tank (no rust), and a properly functioning petcock are 100% mandatory for the bike to run properly.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    Comment

      #3
      Is there a carb guide for the MV carbs?

      Comment

        #4
        VM carbs cleaning tutorial is in BassCliffs website

        Gsarchive.bwringer.com
        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

        Comment

          #5
          https://gsarchive.bwringer.com/bikecliff/images/vm_carb_rebuild.pdf


          Every thing you need to know about a proper cleaning of your VM carbs.
          2@ \'78 GS1000

          Comment

            #6
            I cleaned the carbs and replaced the o rings. It now runs for a minute and dies instead of 5 seconds. Checking the valve clearance is my next step. Anything else i should do?

            Comment

              #7
              Good idea, if it's been 5K, or you don't know when valves were checked it's already past time... Sure still seems like a fuel problem. Simplest thing to try is put pet cock on PRI. Cheapest easiest things first.
              1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

              Comment

                #8
                Any kinks in the fuel or petcock vacuum lines? Will it stay running with petcock in the PRIme position?
                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

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