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  • #1

    Carbs

    I know this is probably a stupid question...but I just removed the carbs to fix a couple vacuum leaks from my bike and I want to check the main jets and the pilot jets to see what sizes they are and would like to know how do I go about that.? This is the first time I ever had a set of carbs off.? My number one cylinder is only running at 100 degrees while all my other ones are running about 300 degrees ...and I have a spark...
    82 XJ1100
    Regina,Saskatchewan,
    Canada

    2006 V-Star 1100 custom
    Tags: None
  • #2
    You should be able to read the number on them after removing the float bowls, as they're stamped on the ends. This is assuming they haven't been boogered up and your eyes are good enough...
    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
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    Yep, can't leave nuthin' alone...

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    • #3
      Originally posted by crazy steve View Post
      You should be able to read the number on them after removing the float bowls, as they're stamped on the ends. This is assuming they haven't been boogered up and your eyes are good enough...
      Make sure you have good lighting too! I had to take mine down to my basement shop and hold it just right to be able to read them!
      1980 XS850SG - Sold
      1981 XS1100LH Midnight Special (Sold) - purchased 9/29/08
      Fully Vetterized and Dynojet Kit added, Heated Grips, Truck-Lite LED headlight, Accel Coils, Irridium plugs, TKAT Fork Brace, XS850LH Final Drive & Black SS Brake lines from Chacal.
      Here's my web page devoted to my bike! XS/XJ User's Manuals there, and the XJ1100 Service Manual and both XS1100 Service manuals (free download!).

      Whether you think you can, or you think you cannot - You're right.
      -H. Ford

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      • #4
        Got it 115 mains and 47.5 pilots
        Still can't figure out why my #1 cylinder is running cold though
        2-5 run at 280-310f and #1 is at 100F
        Checked for spark and it is good
        Plug isn't fouled
        82 XJ1100
        Regina,Saskatchewan,
        Canada

        2006 V-Star 1100 custom

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        • #5
          I am guessing something needs some cleaning in there.
          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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          • #6
            Are they all 47.5 pilot jets? I know the 80 and 81 XS come stock with 42.5, seems odd the XJ would jump that high.
            Life is what happens while your planning everything else!

            When your work speaks for itself, don't interrupt.

            81 XS1100 Special - Humpty Dumpty
            80 XS1100 Special - Project Resurrection


            Previously owned
            93 GSX600F
            80 XS1100 Special - Ruby
            81 XS1100 Special
            81 CB750 C
            80 CB750 C
            78 XS750

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            • #7
              I'd have to check again but i already put the carbs back on. The writing is very small on them and it very well might have read 42.5. I'll be pulling them again on sunday to do some cleaning.
              82 XJ1100
              Regina,Saskatchewan,
              Canada

              2006 V-Star 1100 custom

              Comment

              • #8
                Originally posted by CatatonicBug View Post
                Make sure you have good lighting too! I had to take mine down to my basement shop and hold it just right to be able to read them!
                No kidding. Had mine out the other day, and I couldn't read them by flourescent light. Had to shine a LED flashlight on them to see what they said.
                XS1100SG - Obsession

                Like I told my last wife, I says, "Honey, I never drive faster than I can see. Besides that, it's all in the reflexes."
                -- Jack Burton

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                • #9
                  Originally posted by lancelot455 View Post
                  Got it 115 mains and 47.5 pilots
                  That is correct for the XJ carbs. Sometimes they even need 50 pilots.
                  2H7 (79) owned since '89
                  3H3 owned since '06

                  "If it ain't broke, modify it"

                  ☮

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