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VM22 Carb nightmare

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    VM22 Carb nightmare

    This is my first bike. I bought it cheap. But when I bought it, it didn't run well, but it would go forward, ride around and stuff despite dying every few blocks. I removed the carbs, cleaned them, put them back but found that it was an absolute nightmare to get the stock boots over the carbs. So I just decided to go with pods so I wouldn't have to mess with it. I installed air correction jets, and put the carb back on the bike.

    This is where I'm at right now. I have tried adjusting the pilot air screws and stop idle screw every which way and can not seem to get it to run. Any accelerator use kills the bike immediately. Here is a video of the bike hooked up to a carb-tune.




    Any ideas on what to do next? Sorry about the bother. trying to get this bike going since my truck breaks down allot. I have it two turns on the pilot screws
    Last edited by Laz; 05-24-2024, 02:57 PM.

    #2
    Sounds like it's not running on all 4 cylinders. You can check this from a cold start. Very carefully touch the header pipes to see if all are getting hot. Again, from a cold start only. Cold = no fire in that hole.

    Did you plug the carb vacuum ports before trying to sync?

    Did you rebuild the carbs properly, and replace all the O-rings. Did you replace the O-rings on the carb boots?

    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

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      #3
      What pods are those ?
      Any decent pods should flow around the same as an open carb so set the bike up with them removed to rule out any restriction or masking of the air passages.
      With those air correctors all the jets and settings should be returned to stock except for an increase of the mains a couple of sizes.
      If the carbs are working correctly with no blocked jets or air leaks and the rest of the system , ignition , valve clearances etc has no faults it should run near perfect with little adjustment needed.
      Mikuni Viton Choke Plunger Seat Renewal.
      VITON Choke plunger seals .KAWASAKI Z1,Z900,Z650,Z1000,Z1R,SUZUKI GS1000,GSXR,RF | eBay

      Air Corrector Jets for Mikuni VM 24, 26 and 28mm carbs .
      https://www.ebay.co.uk/itm/254380193...84.m1555.l2649



      sigpic

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        #4
        Clamps do stretch and the ends deform and thet may be as tight as possible but still not aqueeze enough to seal. Drizzle starting fluid around the joints to see if rpms rise or not.
        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.

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