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  • Idle trouble

    I did not synch the carbs yet, but I should still be able to regulate the rpm's right. After HE warms up, idles around 600, but jumps to 3K and keeps fluctuating while I ride. Never drops below 2K when riding. Now what?
    BAMN!

    '81 XS1100H "Brutus"

  • #2
    That's a sync problem.... you won't be able to get a good idle until you do that.
    Fast, Cheap, Reliable... Pick any two

    '78E original owner - resto project
    '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
    '82 XJ rebuild project
    '80SG restified, red SOLD
    '79F parts...
    '81H more parts...

    Other current bikes:
    '93 XL1200 Anniversary Sportster 85RWHP
    '86 XL883/1200 Chopper
    '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
    Cage: '13 Mustang GT/CS with a few 'custom' touches
    Yep, can't leave nuthin' alone...

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    • #3
      Help!

      Trying to synch carbs all 4 needles bouncing all over the place, metering valve does not seem to work,what am I doing wrong?
      Last edited by Nubian; 03-19-2012, 04:12 PM.
      BAMN!

      '81 XS1100H "Brutus"

      Comment


      • #4
        What type of sync setup are you using?
        Nathan
        KD9ARL

        μολὼν λαβέ

        1978 XS1100E
        K&N Filter
        #45 pilot Jet, #137.5 Main Jet
        OEM Exhaust
        ATK Fork Brace
        LED Dash lights
        Ammeter, Oil Pressure, Oil Temp, and Volt Meters

        Green Monster Coils
        SS Brake Lines
        Vision 550 Auto Tensioner

        In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

        Theodore Roosevelt

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        • #5
          3rd attempt at reply
          I am using a 4 gauge setup, one of the gauges is missing the dampening/metering knob. I am alternating to compensate. Also my readings are (using inside #'s of the dial) around the 50-75 marks all the other video's i've seen show the readings in the 200's.
          BAMN!

          '81 XS1100H "Brutus"

          Comment


          • #6
            The number readings are not important, the goal is to have them all the same. Try sticking an old pilot jet in the vac line of the guage for restriction to settle down the fluctuations.
            2H7 (79) owned since '89
            3H3 owned since '06

            "If it ain't broke, modify it"

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            • #7
              jat
              did u calibrate the guages before doing the sync?
              pete


              new owner of
              08 gen2 hayabusa


              former owner
              1981 xs1100 RH (aus) (5N5)
              zrx carbs
              18mm float height
              145 main jets
              38 pilots
              slide needle shimmed .5mm washer
              fitted with v/stax and uni pod filters

              [url]http://www.youtube.com/watch?v=3pA8dwxmAVA&feature=mfu_in_order&list=UL[/url]

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              • #8
                I know, I know hurrying as this will be my main form of transpo for awhile.I got it running ok for now, but thanks for reality check especially as beat up as the unit looks. Gonna test drive before it's too late, then I will do that.
                Originally posted by petejw View Post
                jat
                did u calibrate the guages before doing the sync?
                BAMN!

                '81 XS1100H "Brutus"

                Comment

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