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    #1

    Spark Plug Wires

    I'm sure this a dumb question, but...

    When I unplugged the spark plug wires from my newly acquired, non-running, bike, I noticed that the plug wire labeled "4" was connected to the cyl 2 plug, and the wire labeled "2" was going to the cyl 4 plug.

    I am not sure if these wires or wire labels are from the factory? I'm wondering how I can tell which wire needs to go where. Should I follow the labels? Should I follow where the PO had them plugged in?

    Thanks!
    Tags: None
    #2
    Follow the wires back to the coils. The LEFT coil should power cylinders 1&4, the RIGHT cylinder should power cylinders 2&3.

    .
    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

      #3
      I wonder if that's why it didn't start in the first place...
      He had them hooked up wrong.

      Comment

        #4
        Originally posted by qwqb View Post
        I'm sure this a dumb question, but...

        Should I follow where the PO had them plugged in?

        Thanks!
        There are no dumb questions, especially where PO's are concerned. There was a posting recently about a PO who had put the cams in the wrong sides ( and it still ran!)
        1978 GS 1000 (since new)
        1979 GS 1000 (The Fridge, superbike replica project)
        1978 GS 1000 (parts)
        1981 GS 850 (anyone want a project?)
        1981 GPZ 550 (backroad screamer)
        1970 450 Mk IIID (THUMP!)
        2007 DRz 400S
        1999 ATK 490ES
        1994 DR 350SES

        Comment

          #5
          Could be the previous owner replaced at least one of the coils. Steve's suggestion to check where the wires are going is a good one.
          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

            #6
            Originally posted by Steve View Post
            Follow the wires back to the coils. The LEFT coil should power cylinders 1&4, the RIGHT cylinder should power cylinders 2&3..
            BTW - Right & left are determined while sitting on the bike...
            '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

              #7
              Originally posted by hikermikem View Post
              BTW - Right & left are determined while sitting on the bike...
              Yeah, that's one of those things that some of us know and assume that others should know, too.

              Just to be clear:

              Cylinder 1 is on the LEFT side of the bike, under your clutch hand.

              Cylinder 4 (2, if you have a twin) is on the RIGHT side, under your throttle hand.



              .
              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

                #8
                Originally posted by Steve View Post
                Yeah, that's one of those things that some of us know and assume that others should know, too..
                I assume he knows it now
                '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

                  #9
                  Luckily I know the cylinder order, the PO may not have...

                  Comment

                    #10
                    I would check the ignition timing with the cam timing and then the coils. Make sure the 1&4 coil sparks when the crank trigger passes the 1&4 F mark on the advance.
                    Hopefully the PO didn't touch the cams.
                    1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
                    1985 GS1150ES stock with 85 Red E bodywork.

                    Comment

                      #11
                      Originally posted by Big T View Post
                      There are no dumb questions, especially where PO's are concerned. There was a posting recently about a PO who had put the cams in the wrong sides ( and it still ran!)
                      That would be me

                      Couldn't believe what I saw when the cover came off... ran lovely when cams were turned round... must have been a nightmare to time up for the PO.

                      Anyway, it's currently being fully restored.


                      John

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