Raised needle, stock mains & too rich

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Ranger
    • Feb 2026

    #1

    Raised needle, stock mains & too rich

    Raised the needle with the radioshack washers half the thickness of the original spacer and kept stock jets 122.5 and air/fuel screws are 3 1/2 turns out while running EMGO pods. Runs great, plenty of power, no surging but running rich.

    Should I play with my mixture screws or just set the needles back to stock setting?
    Last edited by Guest; 12-13-2010, 12:28 AM.
  • posplayr
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    • Dec 2007
    • 23673
    • Tucson Az

    #2
    Originally posted by Ranger
    Raised the needle with the radioshack washers half the thickness of the original spacer and kept stock jets 122.5 and air/fuel screws are 3 1/2 turns out while running ERGO pods. Runs great, plenty of power, no surging but running rich.

    Should I play with my mixture screws or just set the needles back to stock setting?
    U sure 122.5 is stock? Seems pretty big for a 700

    Comment

    • Ranger

      #3
      Positive. Service manual shows 122.5. I think I need to turn my screws in for sure.

      Comment

      • Steve
        GS Whisperer
        • Jun 2005
        • 35925
        • southwest oHIo

        #4
        Originally posted by Ranger
        Raised the needle with the radioshack washers half the thickness of the original spacer and kept stock jets 122.5 and air/fuel screws are 3 1/2 turns out while running ERGO pods. Runs great, plenty of power, no surging but running rich.

        Should I play with my mixture screws or just set the needles back to stock setting?
        Not sure when you switched to ERGO pods, but I saw what you did to your EMGO pods in this thread.

        My guess is that your "enhancement" to the restriction of the pods is playing havoc with your ability to tune the carbs.
        Anybody's suggestion on what is needed will likely be based on stock EMGO pods, not modified ones, so they will all be guesses.
        3 1/2 turns is a bit much for what might be stock (or less) airflow, along with raising the needles.

        Ultimately, you will have to do what your sparkplugs are telling you. They are the only ones that really know what's going on inside YOUR engine.
        They will be happy to share that information with you, but you do have to peek at them.


        Do you have stock exhaust? If so, your stock jetting might be too rich with your "enhancement".

        .
        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

        • Steve
          GS Whisperer
          • Jun 2005
          • 35925
          • southwest oHIo

          #5
          Originally posted by posplayr
          U sure 122.5 is stock? Seems pretty big for a 700
          I will confirm that. I looked in the spreadsheet that was posted some time ago, and that's what it says came stock.

          .
          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

          • Ranger

            #6
            Yes I have stock exhaust, I checked the plugs about 15 min prior to posting this. I ran this same set up with my K&N and it was still rich. Even if the suggestions are based on stock pods its still a baseline for me to go off. I did forget that these carbs are leaner when turning the screws in so tomorrow I'll do the highest RPM method.

            Comment

            • Steve
              GS Whisperer
              • Jun 2005
              • 35925
              • southwest oHIo

              #7
              Have you done proper "plug chops"?

              "Chopping" the throttle at specified throttle openings will tell you what's happening in the different circuits on the carbs, but you have to do several runs, at least one for each circuit in the carbs (there are three).

              Just casually reading the plugs will only tell you about the most recent running condition, and that's usually IDLE, as in just before turning the key off.

              .
              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

              • Ranger

                #8
                Not since I raised the needles. I thought about doing it but I got lazy after I had to fix a cracked header

                Comment

                • posplayr
                  Forum LongTimer
                  GSResource Superstar
                  Past Site Supporter
                  • Dec 2007
                  • 23673
                  • Tucson Az

                  #9
                  Originally posted by Ranger
                  Yes I have stock exhaust, I checked the plugs about 15 min prior to posting this. I ran this same set up with my K&N and it was still rich. Even if the suggestions are based on stock pods its still a baseline for me to go off. I did forget that these carbs are leaner when turning the screws in so tomorrow I'll do the highest RPM method.
                  I'm cornfuzed.........
                  stock pipes
                  stock jetting
                  K&N airfilter in an airbox?
                  Black pipe?

                  sounds like something is off; normally all stock setting are on the lean side due to emissions controls.

                  Comment

                  • Ranger

                    #10
                    EMGO Pods or K&N pods but switched back to EMGOs. Stock exhaust, jets and raised needles = black plugs.

                    Did the highest RPM method today (somewhat) and screws are now turned out 2 3/4 and a huge difference in power from closed throttle thru full throttle from what I can tell. Can't really get good results until my clutch springs arrive.

                    Comment

                    • Steve
                      GS Whisperer
                      • Jun 2005
                      • 35925
                      • southwest oHIo

                      #11
                      Here, Pos, this might eliminate some of your cornfuzzlement:

                      Read this thread pay particular attention to post #5.








                      Forget the black pipe, it's a wonder it runs at all.

                      .
                      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

                      • Ranger

                        #12
                        Originally posted by Steve
                        Here, Pos, this might eliminate some of your cornfuzzlement:

                        Read this thread pay particular attention to post #5.








                        Forget the black pipe, it's a wonder it runs at all.

                        .
                        Haha true, but it doesnt eliminate why theres no change in plug color even when I ran my K&N Pods and tuned accordingly

                        Comment

                        • sparki

                          #13
                          new plugs or the same old black ones?

                          Comment

                          • posplayr
                            Forum LongTimer
                            GSResource Superstar
                            Past Site Supporter
                            • Dec 2007
                            • 23673
                            • Tucson Az

                            #14
                            Originally posted by Steve
                            Here, Pos, this might eliminate some of your cornfuzzlement:

                            Read this thread pay particular attention to post #5.








                            Forget the black pipe, it's a wonder it runs at all.

                            .
                            I assumed that Vasoline treatment was to fix the black pipe not create it.

                            I'm suspecting something is not setup right in teh carbs like float levels. No stock setup should have sooty pipes. Are the plugs sooty as well?

                            Comment

                            • Ranger

                              #15
                              Originally posted by posplayr
                              I assumed that Vasoline treatment was to fix the black pipe not create it.

                              I'm suspecting something is not setup right in teh carbs like float levels. No stock setup should have sooty pipes. Are the plugs sooty as well?
                              Plus are sooty.

                              Comment

                              Working...