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    #31
    Yes, I will eliminate the filter. I pulled the tank off, and the petcock is dripping about 3 drips per second, while set at 12 o'clock. I had a hose on the vac line and when I put a slight vacuum on it, it flowed pretty good, but sometimes pretty slowly. If I set it to "prime", it flows bigtime. I pulled one of the float bowl plugs, and the bowl was full. Not sure what is going on here.

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      #32
      Do yourself a favor and ditch the old tired petcock...don’t mess with it, just toss it.
      this guy sells a decent replacement..... mine still good after 9 years

      84-86 GS1150 ES3/ESE/EF/ESF GS1150ES GS1150E. 85-86 GS 1150 EF2/EG/ESG. 80-81 GS 1100 EX GS1100EX gs1100e. 94 GSXR 750 GSXR750. 81-83 GS 750 TZ/TD GS750T. 81-83 GS 750 EX/EZ/ED/ESD GS750E.


      there is another version with more reserve ,
      1981 gs650L

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

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        #33
        So, let's see:

        You have fuel in the float bowls, but none in the cylinders?

        Did you follow the carb cleaning tutorial?

        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.
        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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          #34
          I followed the cleaning procedure on Bikeclffs to the letter. And the petcock is brand new. But I just discovered two of the spark plug wires were on the wrong plugs. I'll install a new fuel line tomorrow, and try it again.
          Last edited by Guest; 04-23-2020, 01:40 AM.

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            #35
            “I pulled the tank off, and the petcock is dripping about 3 drips per second, while set at 12 o'clock. “
            Please clarify
            With the petcock in “PR” spot, fuel should flow nicely...in other positions, there should be no flow, unless you apply vacuum. No drips, no runs, etc.
            1981 gs650L

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

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