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GS850 Backfiring.

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    #1

    GS850 Backfiring.

    Hi All.

    I have a 1979 GS850 and it backfires through the left exhaust. I swopped over the coils but made no differance. It is also very hard to start from cold even with full choke. Will start with a shot of easy start. Would appreciate any help.

    Regards.

    Chris
    Tags: None
    #2
    How many threads have you started about the same problem? I 'think' I counted 3. Are you having problems using the site? or just trying to get your threads seen more?
    Rob
    1983 1100ES, 98' ST1100, 02' DR-Z400E and a few other 'bits and pieces'
    Are you on the GSR Google Earth Map yet? http://www.thegsresources.com/_forum...d.php?t=170533

    Comment

      #3
      Originally posted by azr View Post
      How many threads have you started about the same problem? I 'think' I counted 3. Are you having problems using the site? or just trying to get your threads seen more?
      And the "GS Photo of the Month" forum is probably the WORST one to get tech help.
      Last edited by Steve; 10-28-2013, 01:42 PM.
      sigpic
      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
      Family Portrait
      Siblings and Spouses
      Mom's first ride
      Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
      (Click on my username in the upper-left corner for e-mail info.)

      Comment

        #4
        Sorry. First time to use.

        Comment

          #5
          Originally posted by Steve View Post
          And the "GS Photo of the Month" forum is probably the WORST one to get tech help.
          Especially without any photos.
          http://img.photobucket.com/albums/v5...tatesMap-1.jpg

          Life is too short to ride an L.

          Comment

            #6
            How do the plugs look?
            '79 GS750 - 4th and current ride...first since 1983
            '73 CB350 - 1st ride
            '76 GT750 - 2nd ride - the "water buffalo" - sold to buy an engagement ring
            '79 RD400F Daytona Special - 3rd ride, the last of the street legal US 2-strokes - sold to buy a house

            Comment

              #7
              Hard starting and backfiring can both be caused by tight valves. They can both be caused by gummy carburetors. My guess would be both.
              sigpic Too old, too many bikes, too many cars, too many things

              Comment

                #8
                a compression tester is your friend

                Comment

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