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I'm going crazy!!

Discussion in 'XJ Technical Chat' started by Xj Bobber, Jul 13, 2015.

  1. Xj Bobber

    Xj Bobber Member

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    Can everyone see the pictures of my bike I put in this thread?
     
  2. Xjrider92117

    Xjrider92117 Active Member Premium Member

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    I can
     
  3. Stumplifter

    Stumplifter Well-Known Member

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    I can see it . . . but if it don't run . . . . . . :confused:

    See a lot of mods to it, including pods and chopped mufflers. What I have gleaned here is that a stock bike is easier and more predictable to tune/ troubleshoot.

    Good luck!
     
  4. k-moe

    k-moe Pie, Bacon, Burbon. Moderator Premium Member

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    You need mufflers. I don't mean that it woud be nice if you had some, I mean that you NEED them. Power delivery is crappy without.
     
  5. fiveofakind

    fiveofakind Well-Known Member

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    Buy a new battery & eliminate that from the equation........
     
  6. EarMachine

    EarMachine Member

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    Some of you wise xj owners are so patient.
    Lol
    -EM
     
  7. fiveofakind

    fiveofakind Well-Known Member

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    [​IMG]
     
  8. fiveofakind

    fiveofakind Well-Known Member

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    better pic of alternator brushes showing wear limit indicators...........

    [​IMG]
     
    Steve R likes this.
  9. rocs82650

    rocs82650 Well-Known Member Premium Member

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    Although this is a better pic i can see them just fine in the first photo. Nice pics.

    Gary H.
     
  10. Xj Bobber

    Xj Bobber Member

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    Thanks guys. i got the bike without mufflers they dont have to be stock right? Is it all in the length for the back pressure like a car?
     
  11. Xj Bobber

    Xj Bobber Member

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    Is there a special way that the alternator cover has to come off? i feel like im going to rip some wires when i gently pull on it.
     
  12. XJ550H

    XJ550H Well-Known Member Premium Member

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    slide the rubber gromet out of the shell where the wires run through it it will give you a little more play
     
  13. denbola

    denbola Member

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    has anyone tested the wiring to the engine stop switch?
     
  14. denbola

    denbola Member

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    sorry for the last up guys missed a couple of pages
     
  15. Xj Bobber

    Xj Bobber Member

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    Should this be about 12 volts?
     
  16. Steve R

    Steve R Member

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    Some advice, I have full output voltage above 2,000 rpm's 14.40 volts. At idle it is running on the battery. Starts at 12.6 then slowly drops to 12.30. I tested the stator and they are in spec, .45 ohms give or take 10%. Also tested the rotor and they are in spec, 4.0 ohms give or take 10%. I have 50,000 miles on it and i am pretty sure the brushes have not been changed. Peace of mind i will change the brushes. Have not checked the regulator yet. Brushes or regulator??need changing or both?
     
  17. XJ550H

    XJ550H Well-Known Member Premium Member

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    from this link
    The Ultimate Relay, Switch, Sensor, and Diodes Guide

    "For all XJ-series models, the maximum available charging output VOLTAGE should be as follows (all values are approximate):

    * approximately 500-2000 rpms: 1.8 volts gradually increasing to 14.2 volts
    * 2000+ rpms: 14.2 volts up to about 14.8 volts, with a maximum of 14.8 volts (all models except XJ700-X and XJ750-X)
    * 3000+ rpms: 14.2 volts up to about 14.8 volts, with a maximum of 14.8 volts (all XJ700-X and XJ750-X)

    If your charging voltages are too low, suspect the alternator brushes first, then perform the alternator stator and rotor checks as described in the Alternator Section.
    Note that worn, dirty, or damaged alternator brushes can affect these readings, as can "dirty" copper commutator rings on the rotor face (where the brushes contact the rotor):"


    clean rings with a eraser
    could be the brushes there is a wear mark on them should be iirc 17mm to 11mm
    clean battery terminals and ground connection to frame and motor from battery wire
    and any other connectors in the charging system take a good look at the voltage regulator connectors
    ac gen.PNG
    rect.PNG
     
    Last edited: Feb 10, 2016
  18. XJ550H

    XJ550H Well-Known Member Premium Member

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    I read on another yamaha site that if you go stright pipes go short not long
    I will look for that site and post it here.
    but mufflers are better
     
  19. quebecois59

    quebecois59 Well-Known Member

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    yeah, mufflers are better for your bike and for your neighborhood too.
     
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