Coils

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  • Guest
    #1

    Coils

    Good day all... I have a1979 GS 1000 E. I was riding the other day with my wife , we had gone about 20 miles and the bike started runing on two cyl. I made it back to my house, thank god... When I got home I took out the plugs and found that #2 and #3 cyl were not firing. I had new condenser's so I put them on and there was no change. So i think it is the coils? Each cyl is fed by a diferent coil ##3 right and #2 left. Has this happened to anyone and can you help? Thanks
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    • reddirtrider
      #2
      Check to make sure you have voltage to the coils as it could be a bad connection. The primary side should read 3-5 ohms and the secondary side - plug to plug should read 30k-50k ohms. That's what the manual says for mine and yours shouldn't be too far off those figures.

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        • Guest
          #3
          Ccoils

          Checked voltage 12+ at connections. 5 ohms for each coil. Not sure if i did this right, checked plug wire to plug wire for the left coil #2 and #3 got 105k, the right coil was 36k wire to wire..

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            • earlfor
              Forum LongTimer
              Charter Member
              GSResource Superstar
              Past Site Supporter
              • May 2002
              • 42407
              • off grid cabin in the woods
              #4
              Originally posted by Mitch
              Good day all... I have a1979 GS 1000 E. I was riding the other day with my wife , we had gone about 20 miles and the bike started runing on two cyl. I made it back to my house, thank god... When I got home I took out the plugs and found that #2 and #3 cyl were not firing. I had new condenser's so I put them on and there was no change. So i think it is the coils?

              Each cyl is fed by a diferent coil ##3 right and #2 left. Has this happened to anyone and can you help? Thanks

              The left coil fires cylinders 1 and 4. The right coil fires 2 and 3. Sounds like you have your wires wrong and thats why 2,3 are not working.

              Earl
              Komorebi-The light filtering through the trees.

              I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.

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                • rustybronco
                  Forum LongTimer
                  Bard Award Winner
                  GSResource Superstar
                  Past Site Supporter
                  • Jul 2005
                  • 14961
                  • Marysville, Michigan
                  #5
                  Originally posted by Mitch
                  checked plug wire to plug wire for the left coil #2 and #3 got 105k, the right coil was 36k wire to wire..
                  On the coil that measured 105K, remove the plug caps (boots) from the coil wires and re-measure; you should then read around 26K.
                  if all is well with that resistance measurement, measure the resistance of each plug cap; they should read around 5K each.
                  De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

                  http://www.thegsresources.com/_forum...35#post1625535

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                    • Guest
                      #6
                      Originally posted by Mitch
                      Checked voltage 12+ at connections. 5 ohms for each coil. Not sure if i did this right, checked plug wire to plug wire for the left coil #2 and #3 got 105k, the right coil was 36k wire to wire..
                      Thanks I will go back the the drawing board, i think that the right coil went bad, 2 and 3 have no spark. 1 and 4 have spark . thanks again

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