78 GS1000 contact points

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  • kwmrn
    • Jan 2026

    #1

    78 GS1000 contact points

    First a quick thanks for a superb site & a wealth of information!
    I am having spark issues on #2 &3 cylinders. After installing new dyna coils the weak spark still persists. Trying to reset the points gap & when the crankshaft is turned to align the marks the points don't open at all.
    Is this a major concern? The bike starts& idles ok but "cuts out " &sputters after 1st gear. Any educated guesses?
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35787
    • Torrance, CA

    #2
    Set the point gap and timing properly, per the factory service manual, and check voltage at the coils. If you don't have a proper manual you can download one for free from basscliff's website.

    Good luck.
    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

    • koolaid_kid

      #3
      This is basscliff's website: http://members.dslextreme.com/users/bikecliff/
      You should bookmark it.

      Comment

      • TeamDar
        Forum Sage
        Past Site Supporter
        • Nov 2008
        • 1137
        • St. Louis, MO

        #4
        Did you use 5 ohm coils? If you use the 3 ohm coils with points you need to use a 1 to 2 ohm ballast resister in the 12 volt lead going to the coils.

        Comment

        • kdo58

          #5
          Did you change the condesers?

          Comment

          • kwmrn

            #6
            Originally posted by Nessism
            Set the point gap and timing properly, per the factory service manual, and check voltage at the coils. If you don't have a proper manual you can download one for free from basscliff's website.

            Good luck.
            Ok will do. However when I rotate the crankshaft to align the marks the points do not open!

            Comment

            • Nessism
              Forum LongTimer
              GSResource Superstar
              Past Site Supporter
              Super Site Supporter
              • Mar 2006
              • 35787
              • Torrance, CA

              #7
              Originally posted by kwmrn
              Ok will do. However when I rotate the crankshaft to align the marks the points do not open!
              Um, that's why you need to adjust them.
              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

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