DIY: Charcoal Canister Removal on F800GS (with pictures!!)

Discussion in 'Parallel Universe' started by Y E T I, Aug 28, 2009.

  1. LukasM

    LukasM Long timer

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    I haven't noticed a vacuum but I have only filled up the tank couple of times so far.

    I will take a look where the hose goes this weekend, unless Griz below already got confirmation?



    Do you know that for a fact? Then I don't have to dig around under the seat trying to trace mine.
    #61
  2. LukasM

    LukasM Long timer

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    Subframe is the same.
    #62
  3. The Griz

    The Griz Long timer

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    I do not have confirmation on where the #18 hose goes to on the Euro-spec F8's. I can only assume that it vents to the ground, though, like every other motorcycle.





    Yes, I do know for a fact that the Euro-spec models do not have a breather filter on the #18 gas tank vent line.
    #63
  4. ebrabaek

    ebrabaek Long timer

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    After doing another CC vasectomy on a friends brand new 8gs..... I did a little more playing around with the Little valve about 8 inches from the tank.... As I had mentioned before i a few diff. posts.... My valve during earlier testing was found to relieve pressure away from the tank after about 5 psi was applied on the tank side..( against the arrow). I was curious as to how the valve work....since it vent`s freely towards the tank to relieve any vacuum. Looks/sounds like there is a small ball in there and a neutral point where gasses can flow free in either direction...... The catch..... flow rate needs to be very slow away from the tank...... Blow slow....and the valve will flow free against the arrow......Blow a little faster....ball seats...and flow stops.... Perhaps BMW thought that fuel vapors will pass freely to vent the tank....and if liquid entered from the tank the valve will in fact shut and prevent fuel from entering the CC...... In that discovery..... I remounted my valve in the spectra filter......angled up...slightly....and fuel vapors are in fact flowing free away from the tank. This is just my observation....nothing else.....Most likely won`t make any difference...... Never the less.... That`s what I did. :thumb:thumb

    Erling
    #64
  5. rjudge

    rjudge Texan from near Muskogee

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    I rode in heavy rain weekend before last and sure enough I started experiencing misfiring. I read up on the canister problem and did the resection today. I basically used the method at the start of this thread but instead of a Uni filter, I used an inline air filter for air brakes I found at Autozone. I hooked one nipple to the tank vent hose and the other to the existing hose that was hooked to the bottom of the canister. My bike already had the recall fix with a "Y" in this hose with one hose going to the bottom of the bike and the other to under the seat area. I'm thinking my canister was fouled with gas as I'm pretty sure I overfilled several times when I got the bike, not knowing of the problem. "Hell, fill that sucker up!" The canister smelled pretty strongly of gas. I'm planning a trip this weekend so I'll see if there's any improvement in running. It seems better just starting it in the garage.

    One thing I found when doing this was that the wire bundle that goes from rearward just over the front sprocket to the area just behind the regulator was routed poorly and had been rubbed by the chain. The outer fabric cover was worn completely through but no wire insulation was worn that I found. I need to find some good electrical tape and try to repair. It's going to be difficult. Very tight quarters and everything is covered with chain gunk. Ah well.

    Rick
    #65
  6. 2Stamp

    2Stamp Been here awhile

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    FWIW, I looked at my '11 800GS and apparently the "T" fix was done at the factory. Actually as stated above, it's a "Y" fix. Anyway, for those that may be wondering.


    "Y" fitting
    [​IMG]

    View from side of canister (not the best picture)
    [​IMG]

    Where top tube is routed
    [​IMG]
    [​IMG]
    #66
  7. BMW_BIKER_KEITH

    BMW_BIKER_KEITH Been here awhile

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    The dealer may have performed the "Y".
    #67
  8. SouthWestRider

    SouthWestRider Adventurer

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    My 2010 is the same way.
    #68
  9. CarlS

    CarlS Adventurer

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    Scott, I thank you for this thread. I want to remove canister from my Tiger 800XC and this thread has answered my questions. Much appreciated.
    #69
  10. Y E T I

    Y E T I Unpossible

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    You're welcome! :D
    #70
  11. 1fastjunebug

    1fastjunebug Been here awhile

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    Probably a dumb question, but why did you put a filter on the line that goes to/from the tank?

    Part # ??


    Doesn't this line carry fumes and overflow raw gasonline from the tank?

    Inquiring minds want to know.

    Great thread and pictures, thanks ever so much.

    Bugley.
    #71
  12. JRWooden

    JRWooden Long timer

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    I think the "theory" there is that as the tank breaths the filter will prevent dust from getting into the tank.

    Your question made me start re-thinking the situation....

    Non-USA bikes do not have the canister, but DO have a same vent line with the pressure/vacuum check valve in it as the USA bikes. On the assumption that non-USA bikes use the same fuel tank ... I wonder if the tap that would otherwise go to the canister is just capped off or ????? :huh
    #72
  13. majorhavok

    majorhavok Adventurer

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    Ok, sorry to re-hash this, but I'm in Commie-fornia and have no intention of leaving the CC in my new '12 F800GS when it arrives in a few weeks. The OP is a couple years old and the pics aren't linked anymore and I'd love to do this mod after break-in/first service. Any way to get the pictures up again? :D
    #73
  14. ride2little

    ride2little Riding Like the Wind

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    I don't know if someone just fixed this...but I can see the original pictures just fine.
    #74
  15. majorhavok

    majorhavok Adventurer

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    Yeh, or maybe I shouldn't have been on ADV rider at work.. :evil

    The pics may have been blocked by my company, and I thought the link was dead because I just saw the red x boxs instead of pics. I see them now from home.. Oops.

    Sorry!
    #75
  16. ebrabaek

    ebrabaek Long timer

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    Perhaps you are addressing this to me.... With the CC gone.....air going into the tank to relieve spend fuel......need to be filtered....imho. No need to put more gunk in the injectors..... They are having a hard time enough with the pump corrosion from ethanol. If the bike tips over ....fuel will be turned off by the " tip over shut off valve ...located on the top of the tank....where the line departs. Vapor expansion will be relieved via the check valve.....( arrow pointing towards the tank)....which also serves as a liquid blocker.....don`t ask me.....but I tried to push water through it..... could`nt......only vapor....after about 5 psi diff. So I installed said check valve back in the filter. I have a little saturation under the filter.....but nothing to be worried about.... Bought the filter at an automotive store for under $7....US$.
    :thumb:thumb

    Erling
    #76
  17. señormoto

    señormoto Supermoto Abuser

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    Should note that, although the instructions from the OP do not mention this, I found it much easier to remove the canister after I took the chain off of the counter sprocket. Might help someone that is doing this after reading the thread. :wink:
    #77
  18. Y E T I

    Y E T I Unpossible

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    I didn't have to, but I can see how that would make it easier. For that matter (I don't know if you had to mess with the back wheel to get the chain off) you could just remove the countershaft sprocket.
    #78
  19. señormoto

    señormoto Supermoto Abuser

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    Yeah, you have to loosen the rear axle and chain adjuster on the drive side, then push the wheel forward a bit to get more slack in the chain. Then you take the chain off of the counter sprocket. I don't believe that taking the CS off without loosening the chain is a good idea.
    #79
  20. Y E T I

    Y E T I Unpossible

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    I think I've done it when switching to the next size smaller CS sprocket. I'm known for doing things that are not considered good ideas. :baldy
    #80