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82 XJ750 hanging idle

Discussion in 'XJ Technical Chat' started by tkh500, Apr 10, 2015.

  1. tkh500

    tkh500 New Member

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    Alright, this bike was sitting 23 years before I got it. Adjusted the valves, super cleaned carbs, bought butterfly shaft seals from Len. Also bought a carb pro 4 synchronizer. Put it all back together and fired it up and let it warm up. Synced carbs and same thing. It wont idle and when I set the idle screw to where it will idle, as soon as I give it gas, it hangs up in the revs. I don't get it. Could it be the diaphragms are to hard? I'm at my wits end. Someone with experience HELP ME PLEASE!
     
  2. tkh500

    tkh500 New Member

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    Oh yea, compression test showed #1 120 #2 120 #3 112 # 4 120. All within reason.
     
  3. FtUp

    FtUp Well-Known Member

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    try adjusting the pilot mixture. do you have a color tune plug?

    FU
     
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  4. garyS-NJ

    garyS-NJ Member

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    what was it? My XJ550 isn't idling after re-building and rejetting
     
  5. Toomanybikes

    Toomanybikes Well-Known Member

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    FU is prob correct, way to fat idle mix will behave like the choke is on
     

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