fouled spark plugs

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  • taylorgaz
    #1

    fouled spark plugs

    Hi there,
    Im having a bit of trouble with my gs1000g,
    I was getting no spark due to oily spark plus so changed them for new ones, It started first time and ran grand but the next time i tryed to start the bike i wouldnt start.
    I pulled out the plugs again and found them to be oily,
    Anyone had this problem, any ideas on whats happening,
    Cheers
    Tags: None
    • 49er
      Forum Sage
      Past Site Supporter
      • Jul 2006
      • 1517
      • Napier, New Zealand
      #2
      Does the engine burn oil? Do you see blue smoke out of the exhaust? These signs should be present if the plugs are getting fouled by oil.

      Are you sure that they are oil fouled and not fuel fouled, through an overly rich condition?
      :) The road to hell is paved with good intentions......................................

      GS 850GN JE 894 10.5-1 pistons, Barnett Clutch, C-W 4-1, B-B MPD Ignition, Progressive suspension, Sport Demons. Sold
      GS 850GT JE 1023 11-1 pistons. Sold
      GS1150ES3 stock, V&H 4-1. Sold
      GS1100GD, future resto project. Sold

      http://i155.photobucket.com/albums/s...s/P1000001.jpg
      http://i155.photobucket.com/albums/s...s/P1000581.jpg

        Comment

        • BassCliff
          #3
          Hi,

          Weak spark? Improper jetting? Bad valve seals? What's the maintenance history on the bike?


          Thank you for your indulgence,

          BassCliff

            Comment

            • taylorgaz
              #4
              Originally posted by 49er
              Does the engine burn oil? Do you see blue smoke out of the exhaust? These signs should be present if the plugs are getting fouled by oil.

              Are you sure that they are oil fouled and not fuel fouled, through an overly rich condition?
              I did change air filter lately and checked the plugs again and found it was fuel on the plugs, too rich?... will i need to re jet?

                Comment

                • 49er
                  Forum Sage
                  Past Site Supporter
                  • Jul 2006
                  • 1517
                  • Napier, New Zealand
                  #5
                  Originally posted by taylorgaz
                  I did change air filter lately and checked the plugs again and found it was fuel on the plugs, too rich?... will i need to re jet?
                  What type of filter did you fit. If foam, you may have over oiled it, causing too much restriction to good air flow and an overly rich condition.

                  When the engine is rich enough to foul plugs, you usually see black smoke coming from the exhaust at idle and at lower rpms.

                  Do you know what jets are fitted? Has a PO messed with the jetting?
                  :) The road to hell is paved with good intentions......................................

                  GS 850GN JE 894 10.5-1 pistons, Barnett Clutch, C-W 4-1, B-B MPD Ignition, Progressive suspension, Sport Demons. Sold
                  GS 850GT JE 1023 11-1 pistons. Sold
                  GS1150ES3 stock, V&H 4-1. Sold
                  GS1100GD, future resto project. Sold

                  http://i155.photobucket.com/albums/s...s/P1000001.jpg
                  http://i155.photobucket.com/albums/s...s/P1000581.jpg

                    Comment

                    • Guest
                      #6
                      Can you post a pic of the plugs?
                      Oil fouled tend to be glossy black and fuel a flat black

                        Comment

                        • SqDancerLynn1
                          #7
                          First thing I would do is make sure you have 12 volts on the coils

                            Comment

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