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"KRS/GT" Technical Q&A K1200RS/GT Technical Questions/Answers

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  #1  
Old 09-21-2018, 09:08 AM
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Charcoal canister removal

Does anybody have info on removing the charcoal canister on a 03 K12RS?
Val
03 K12RS
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  #2  
Old 09-21-2018, 09:31 AM
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Re: Charcoal canister removal

Quote:
Originally Posted by trident74
Does anybody have info on removing the charcoal canister on a 03 K12RS?
Val
03 K12RS

Use the search tab above, but why would you want to unless it was defective?
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  #3  
Old 09-21-2018, 10:47 AM
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Re: Charcoal canister removal

Quote:
Originally Posted by K-K
Use the search tab above, but why would you want to unless it was defective?
I always remove mine! Saves on weight

It’s a simple process...just buy a universal plug kit from any auto store...I believe there will be only 2 hoses to plug....been a while since I removed mine on the K....
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  #4  
Old 09-21-2018, 11:14 AM
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Re: Charcoal canister removal

Here's a place to start,

http://www.i-bmw.com/showthread.php?...annisterectomy
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  #5  
Old 09-21-2018, 12:00 PM
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Re: Charcoal canister removal

The i-BMW archives at K-bikes is essentially dead. Here is the message you get when searching the database.


SQL ERROR: Database error only visible to forum administrators
SQL ERROR: Database error only visible to forum administrators
No matches.Search results for query: cannisterectomy



If you are not experiencing any problems, leave it in place, unless you want to free up space under the seat. You gain nothing by removing it. I've had mine in place since 2001 with no problems.
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  #6  
Old 09-21-2018, 05:24 PM
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Re: Charcoal canister removal

K-K. The reason for thinking about removing the charcoal canister is that I’m having a problem with the fuel gauge. It won’t show full after a fill up and I have read that the cause of the problem can be the canister. I have not pull the fuel sensor out to look at yet. I would like to get a look at the tube to see if there is any damage.

Val
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Old 09-21-2018, 05:37 PM
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Re: Charcoal canister removal

Quote:
Originally Posted by trident74
K-K. The reason for thinking about removing the charcoal canister is that I’m having a problem with the fuel gauge. It won’t show full after a fill up and I have read that the cause of the problem can be the canister. I have not pull the fuel sensor out to look at yet. I would like to get a look at the tube to see if there is any damage.

Val

Never heard or experienced that one. Only thing I can think of is excess pressure in the tank cause by a flooded cannister. Try it with the gas cap open to rule this out.
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  #8  
Old 09-21-2018, 06:03 PM
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Re: Charcoal canister removal

Quote:
Originally Posted by trident74
K-K. The reason for thinking about removing the charcoal canister is that I’m having a problem with the fuel gauge. It won’t show full after a fill up and I have read that the cause of the problem can be the canister. I have not pull the fuel sensor out to look at yet. I would like to get a look at the tube to see if there is any damage.
Val

Quote:
Originally Posted by K-K
Never heard or experienced that one. Only thing I can think of is excess pressure in the tank cause by a flooded cannister. Try it with the gas cap open to rule this out.

Rick, Val,
The canister itself will not affect the fuel-level mechanism in real time AND removing it will NOT undo the current problem (I am assuming the float mechanism has been damaged).

However, not having the Canister will often helps avoiding this issue in 1st place. If maintenance was done properly (checking / clearing canister) AND riders would avoid filling-up excessively, the canister mechanism would work as intended. I am glad mine never had it. Canada and Europe models do not have it - this is the way they came from factory).

On all K1200RS and K1200LT, the scenario is often the following:
- canister is plugged OR the tank lower vent hose leading to canister is blocked (in one way of another)
- the tank cannot vent (take air as fuel goes out), hence it tend to implode (sucking air) - at same time this will force the tube of the float mechanism in torsion / compression
- float cannot move up or down fully because tube is not straight anymore.

See this video done by a member of the K1200LT forum to inspect and fix the float mechanism. Although the K1200LT in video has minor differences in tank cover and filler cap compare to K1200RS/GT, the float mechanism is the same:
https://www.youtube.com/watch?v=lBTZemEWSd0
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K1200RS (2002 IceBlue/Red - 95,000 miles)
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K1200RS parts for sale here:
http://www.i-bmw.com/classifieds/sho...500&ppuser=144
++++++++++++++++++++++++++
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  #9  
Old 09-21-2018, 08:45 PM
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Re: Charcoal canister removal

Thanks Sailor. I saw that video and is very helpful. I wish I could find the video he did about taking the canister out. Video instructions are so much better then worded ones.
I didn’t take the sensor out yet but I suspect that this is going to be my problem.

Val
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  #10  
Old 09-22-2018, 01:09 PM
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Re: Charcoal canister removal

Mine once didn't show empty and the warning light didn't come on.So I ran out of gas with the needle above the empty mark.

Walked a mile for gas in cold/windy Iowa.

My suspicion was on the relay not the float.So I replaced the relay.Faultless ever since.
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  #11  
Old 09-22-2018, 03:36 PM
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Re: Charcoal canister removal

Quote:
Originally Posted by pbegin@burton
Mine once didn't show empty and the warning light didn't come on.So I ran out of gas with the needle above the empty mark.

Walked a mile for gas in cold/windy Iowa.

My suspicion was on the relay not the float.So I replaced the relay.Faultless ever since.

Pierre,
Good point, although not very common for this so-called "fuel-warning relay" to be defective - there are a lot more damaged float-tube in these K1200RS/LT. In your case, I guess having invalid infos BOTH from needle AND no warnings on dash was a hint something has not right.

Although I have some specs and pin-outs , I have not figured out a sure-fire testing method for these - not yet anyway.

This is NOT a standard / cheap relay as it contains chip-logic and a memory. Even from 3rd party supplier, the cheapest is $US$ 120 ($143 from BMW dealer):
https://www.euromotoelectrics.com/Re...-p/rel-754.htm

In such case, EBAY is a good source, even if you have to buy 2 used / cheap ones before you hit the jackpot.... still will be much cheaper than $120.
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~~~~~~~~~~~~~~~~~~~~~~~~~~
Jean (Montreal, CANADA)
K1200RS (2002 IceBlue/Red - 95,000 miles)
~~~~~~~~~~~~~~~~~~~~~~~~~~
K1200RS parts for sale here:
http://www.i-bmw.com/classifieds/sho...500&ppuser=144
++++++++++++++++++++++++++
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  #12  
Old 09-22-2018, 05:57 PM
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Re: Charcoal canister removal

Just reread my last post.
WOW WOW WOW
Video instructions are better then “worded ones”. I think Video instructions are better then “written ones” is the proper way to go. Sorry brain fart.

Val
03 K12RS
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