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Quickie question: Spark plug wire routing?

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    Quickie question: Spark plug wire routing?

    So I feel this might be a silly question but when I was adjusting my valve tappets I noticed the routing of my Spark Plug Wires to my Coils seemed a little weird on my '77 GS750.
    So I cross-checked them with the manual and I'm a little confused.
    In the manual the diagram shows one coil runs the #1 and #4 cylinders and the other runs the #2 and #3.
    However, my coils are set up so one is running #1 and #3 and the other runs #2 and #4

    So how should they be set up?
    And which coil runs which Cylinders? (looking at the bike from the seat, the left or right coil as mounted on the frame)

    Since doing my valve adjustments, the bike runs better, but I'm still getting a little "Lurching" while riding, and also some slight miss-firing/backfiring out of the #4 cylinder. I know there's other stuff I can check for these problems, but noticing the coil wires, I wanted to make sure they were right first.

    #2
    Originally posted by BigDaddyD View Post
    So I feel this might be a silly question but when I was adjusting my valve tappets I noticed the routing of my Spark Plug Wires to my Coils seemed a little weird on my '77 GS750.
    So I cross-checked them with the manual and I'm a little confused.
    In the manual the diagram shows one coil runs the #1 and #4 cylinders and the other runs the #2 and #3.
    However, my coils are set up so one is running #1 and #3 and the other runs #2 and #4

    So how should they be set up?
    And which coil runs which Cylinders? (looking at the bike from the seat, the left or right coil as mounted on the frame)

    Since doing my valve adjustments, the bike runs better, but I'm still getting a little "Lurching" while riding, and also some slight miss-firing/backfiring out of the #4 cylinder. I know there's other stuff I can check for these problems, but noticing the coil wires, I wanted to make sure they were right first.
    Left 1 and 4
    Right 2 and 3

    Comment


      #3
      Yep. He's absolutely right and I have to fill out to more than ten characters.


      .
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      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
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      Comment


        #4
        Awesome.

        Thanks guys!

        So... how is the bike even running if my plug wires have been wrong this whole time?

        You don't think it mighta messed anything else up would it?

        Comment


          #5
          Originally posted by BigDaddyD View Post
          Awesome.

          Thanks guys!

          So... how is the bike even running if my plug wires have been wrong this whole time?

          You don't think it mighta messed anything else up would it?
          Good question - let us know how it runs after you get the wires routed correctly.
          '85 GS550L - SOLD
          '85 GS550E - SOLD
          '82 GS650GL - SOLD
          '81 GS750L - SOLD
          '82 GS850GL - trusty steed
          '80 GS1100L - son's project bike
          '82 GS1100G - SOLD
          '81 GS1100E - Big Red (daily rider)

          Comment


            #6
            Originally posted by BigDaddyD View Post
            Awesome.

            Thanks guys!

            So... how is the bike even running if my plug wires have been wrong this whole time?

            You don't think it mighta messed anything else up would it?
            The engine can ignite,but in the wrong order.Can cause enginefailure in a long run.

            Comment

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