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Thread: R1100RS Charcoal Canister

  1. #1
    http://www.rd400racer.com rd400racer's Avatar
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    R1100RS Charcoal Canister

    My 2000 R1100RT was totaled 10 days ago (while parked). Insurance company writes me a nice check, and this weekend I found a 94 RS in pristine condition. 50K miles, has Ohlins and assorted other nice farkles along with every service record since new. And it was so clean you could eat off it.

    Now, the problem. The previous owner removed the charcoal canister and the lines are just zip tied to the rear peg bracket. I have owned it since Saturday and after every ride I get a quarter size drip of gas on the ground. To make it worse, when I park it in my air condition garage over night I get about a 5 inch diameter pool.

    I'm sorry but this is totally unacceptable. I have a spare canister. Should I just put the thing back on? Is there going to be any issues? The canister is off my RT but I'm just guessing they are all the same in that year range (correct?). It's a great bike but I can't deal with a gas leak.


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    2001 Ducati Monster; 1996 R1100GS; 1985 RZ350; 1977 RD400

  2. #2
    Registered User roger 04 rt's Avatar
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    I don't know if the canisters are the same but you can figure that out at the MAX BMW parts site. You shouldn't put it on yet though.

    There are two vent lines inside your tank that exit through a metal plate in the side of the tank. One goes to the filler neck to drain water from the outside. The other goes to an anti tip valve at the top of the tank. Assuming that your tank is not over full, my guess is that inner vent line is leaking inside the tank. You need to have this figured out and repaired before putting the canister back on.

    If you search this forum you can find a lot about the repair.

  3. #3
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    gas is not leaking solely because of cannister removal (mine's gone, has never leaked). most likely, filler neck has been drilled, or (possibly) cannisterectomy was not quite completed. with the filler neck having been drilled, they will leak when on sidestand with full tank. so- either don't park it with a full tank, or use the c-stand to do so.
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    Take a look at the can removal procedure - I just did mine. Doesnt sound like they capped off one of the lines correctly.

    I love the look without the can - my vote is - KEEP IT OFF!

    http://www.ibmwr.org/r-tech/oilheads...ter_horn.shtml

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    leak

    Bad line inside the fuel tank. If you replace the canister without replacing the bad line, you will just kill your newly installed canister. The canister is there to collect vapor, not raw fuel. Yes, it is intended to intercept an 'overfilled' condition, but I would bet you haven't done that, now have you?
    Be sure to buy the necessary 'safe to be submerged' fuel line from Napa (or your dealer).

  6. #6
    Registered User redsledrider's Avatar
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    Does a R11RS even have one?

    I have a 95 R1100RS and have never seen one on my bike or in the parts micro fich thing iee.

    My vent tubs just run down between the swing arm and right foot peg mount.
    84 Honda 700S Nighthawk
    95 R1100RS

  7. #7
    http://www.rd400racer.com rd400racer's Avatar
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    Quote Originally Posted by Jambx View Post
    Take a look at the can removal procedure - I just did mine. Doesnt sound like they capped off one of the lines correctly.

    I love the look without the can - my vote is - KEEP IT OFF!

    http://www.ibmwr.org/r-tech/oilheads...ter_horn.shtml

    Thanks, this is excellent. I'll do a reverse check of the previous work; I would guess something along the lines of the comments here has occurred.

    By the way, the bike has not had a full tank yet (probably less than half).

    On a complete different note, I love this bike so far. I sold my CBR900RR to get the 1100RT.....I wanted something I could ride to work comfortably every day and possibly do some real miles. The RT was great and I dealt with it's "largeness" just fine. But I think this RS is what I was really looking for.

    http://www.rd400racer.com/

    2001 Ducati Monster; 1996 R1100GS; 1985 RZ350; 1977 RD400

  8. #8
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    [QUOTE
    On a complete different note, I love this bike so far. I sold my CBR900RR to get the 1100RT.....I wanted something I could ride to work comfortably every day and possibly do some real miles. The RT was great and I dealt with it's "largeness" just fine. But I think this RS is what I was really looking for.


    I could not agree with you more - I was looking for something more comfortable than my Ducati M900 - always loved the look of the Boxer BMWs and started looking at the RT but something just didn’t seem right. Too much fairing, too heavy - it just wasn’t me - than I found out about the RS - it was perfect in my eyes - sporting yet offered some protection and 2 up was a dream compared to the Monster!

    Although I still have the M900 for those days I feel like a kid again.
    Attached Images Attached Images

  9. #9
    It shouldn't be too hard to fix. You just need to pull the tank, flip it over, pull the fuel pump plate, and troubleshoot the lines. While you're doing it, you might want to consider installing some quick disconnects in the fuel lines. You can buy them from beemer boneyard. They're a little pricey, but they're very trick, and stout.

    While you're doing that, you might want to consider externalizing your fuel filter. Once you see how hard it is to pull your tank, you need to consider the thought of doing it on the side of the road to change a bad filter. Huge PITA. If you move the filter outside the tank you have a much easier time changing a filter.

    Also, once you have all this sorted out you still can't simply fill the tank and park it for the night. It will leak. You need to get gas 10 miles or so from your destination, or leave a little air gap at the top of the tank.

  10. #10
    http://www.rd400racer.com rd400racer's Avatar
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    Quote Originally Posted by Jambx View Post
    [QUOTE
    On a complete different note, I love this bike so far. I sold my CBR900RR to get the 1100RT.....I wanted something I could ride to work comfortably every day and possibly do some real miles. The RT was great and I dealt with it's "largeness" just fine. But I think this RS is what I was really looking for.


    I could not agree with you more - I was looking for something more comfortable than my Ducati M900 - always loved the look of the Boxer BMWs and started looking at the RT but something just didn‘«÷t seem right. Too much fairing, too heavy - it just wasn‘«÷t me - than I found out about the RS - it was perfect in my eyes - sporting yet offered some protection and 2 up was a dream compared to the Monster!

    Although I still have the M900 for those days I feel like a kid again.

    Damn, we should be hanging out!

    I've got a Monster too and instead of the nice TR6 I see in the background, I've got an Alfa Spider. Too funny..

    The Monster...

    http://www.rd400racer.com/

    2001 Ducati Monster; 1996 R1100GS; 1985 RZ350; 1977 RD400

  11. #11
    Registered User Bmandiego's Avatar
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    What would happen if you just plugged the line that is dripping?

  12. #12
    http://www.rd400racer.com rd400racer's Avatar
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    Quote Originally Posted by Bmandiego View Post
    What would happen if you just plugged the line that is dripping?

    That is one amazingly good question that I almost didn't dare ask for fear of being beaten over the head with a charcoal canister.
    http://www.rd400racer.com/

    2001 Ducati Monster; 1996 R1100GS; 1985 RZ350; 1977 RD400

  13. #13
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    [QUOTE=rd400racer;788435]Damn, we should be hanging out!

    I've got a Monster too and instead of the nice TR6 I see in the background, I've got an Alfa Spider. Too funny..

    Ok - just because we all love pics and the Monster is another one of those works of art.
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  14. #14
    Registered User Bmandiego's Avatar
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    Quote Originally Posted by rd400racer View Post
    That is one amazingly good question that I almost didn't dare ask for fear of being beaten over the head with a charcoal canister.
    too funny. lol

  15. #15
    wvrocks
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    Quote Originally Posted by Bmandiego View Post
    What would happen if you just plugged the line that is dripping?
    Eventually the line will deteriorate and start leaking again. You will have a drain line sitting there full of fuel over a hot exhaust/engine while you wait.

    My 95 GS had a similar problem after I replaced the fuel filter. Somehow during the job I pinched one of the internal vent lines and it cracked and started leaking. Of course I discovered this after filling the tank all the way. It started as a drip and turned into a pretty steady flow. Drained and pulled the tank again and replaced all the internal rubber lines, even the expensive little U line. Problem solved.

    I also replaced the external drain lines just for good measure.

    While your in there you might as well change the fuel filter and sock and put on some new fuel lines and quick connectors. All the lines in the tank need to be rated for submersion in fuel.

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