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#653461 - 11/13/10 08:29 AM Clogged Charcoal Canister?
APDDave Offline
Member

Registered: 08/01/04
Posts: 104
Loc: Atlanta Ga.
I had been having touble lately with when I go to get gas in the bike, I can hardly pry the lid open. There is a heavy vacum built up inside the tank and it wont let it open. Took the bike to the shop and they told me that the charcoal canister was completly clogged. Sould I replace it, or someone suggested to just bypass it?
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David
2013 R1200RT
2013 R1200RT-P
2010 F800 GS


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#653469 - 11/13/10 08:58 AM Re: Clogged Charcoal Canister? [Re: APDDave]
dirtrider Offline
The Oracle
Member

Registered: 06/05/10
Posts: 8370
Loc: Ohio
Morning David

Only you can answer that question. That Evap Canister is a great emission reducer as it traps unburnt hydrocarbons then later releases them to be burned in the engine and sent through the catalytic converter.

If you are concerned with keeping the factory emission controls intact then maybe find another Evap can on E-Bay or post a wanted in the want adds here.

On the other hand it isnít working now so simply removing it and venting the gas tank directly to atmosphere wonít add any more emissions to the planet.

A lot of riders have removed that Evap can and direct vented their gas tanks so you wouldnít be the first or the last to do so. That also means there are plenty of take-offs floating around if you desire to go that route.

In any case you need to do something as that vacuum in the tank can ruin your fuel gauge sender and cause you other issues.

So until you make you mind up at least disconnect your plugged Evap can so at least the tank vent properly.
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#653478 - 11/13/10 09:33 AM Re: Clogged Charcoal Canister? [Re: dirtrider]
GordonB Offline
Member

Registered: 03/25/05
Posts: 1288
Loc: Huntington Beach, CA
At least disconnect the hoses to the canister to prevent vacuum build up.
If you choose to replace, follow the hose that goes from the can across the seat to the left side and to a solenoid valve. That valve is most likely clogged with bits of charcoal as well. On the other side of the valve there's a hose that goes to the left TB. disconnect it (at the valve) and plug it up.
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2007 R1200RT, sold
2000 R1100RT, off to boneyard
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#653520 - 11/13/10 12:22 PM Re: Clogged Charcoal Canister? [Re: APDDave]
Danny caddyshack Noonan Offline
Member

Registered: 08/16/08
Posts: 2120
Loc: El Dorado Hills, CA
If you can figure out how to open it and put it back together, aquarium charcoal is acceptable to use to refurbish charcoal canisters. It is just activated charcoal.
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Peter

God bless America!
Rule of rocketry #1: Pointy end up...stupid.
Danny, be the ball.
'12 R1200RT Midnight Blue.
99 R1100RT, KLR650 sold
TR6 (sold, wife can now park in the garage)

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#653689 - 11/14/10 03:17 AM Re: Clogged Charcoal Canister? [Re: Danny caddyshack Noonan]
SKYGZR Offline
Member

Registered: 04/17/08
Posts: 549
Loc: Planet Earth, Orion Spur, Milk...
Remove the Worthless thing. This type of Crap don't belong on motorcycles.....get rid of it.
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As of NOV-2014,
'85K100RS,Original Owner,DOWN@*200,620*mi
'96R1100RS,3rd Owner,66,000mi.
'03K1200GT, 4th Owner,41,690mi. New Ride
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#653705 - 11/14/10 07:53 AM Re: Clogged Charcoal Canister? [Re: SKYGZR]
DrPaul Offline
Member

Registered: 07/21/07
Posts: 183
Loc: Oklahoma
Originally Posted By: SKYGZR
Remove the Worthless thing. This type of Crap don't belong on motorcycles.....get rid of it.
Amen, brother! The solution to the problem of allowing unspent fuel to vaporize into the atmosphere is to ride your motorcycle a lot thereby never permitting them little hydrocarbon atoms to escape your tank! But, if you want to replace the cannister, I've got 3 or 4 of 'em around here somewhere!
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Paul
2004 R1150RT
1974 R90/6
2002 R1150RT - sold
1987 K75S - sold
1996 Royal Star

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#653807 - 11/14/10 03:31 PM Re: Clogged Charcoal Canister? [Re: DrPaul]
APDDave Offline
Member

Registered: 08/01/04
Posts: 104
Loc: Atlanta Ga.
If I do away with it, will it upset the computer system on the bike? Will anything else have to be reset or readjusted?
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David
2013 R1200RT
2013 R1200RT-P
2010 F800 GS


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#653819 - 11/14/10 04:05 PM Re: Clogged Charcoal Canister? [Re: APDDave]
Boffin Offline

Administrator
Member

Registered: 10/02/04
Posts: 8546
Loc: Leicestershire, UK
Originally Posted By: APDDave
If I do away with it, will it upset the computer system on the bike? Will anything else have to be reset or readjusted?


They are only fitted to USA market bikes. Just be sure both throttle body vents are capped, and that the tank is vented. On non-US bikes the vent hose runs alongside the filler-neck drain hose to behind the riders RH footpeg. Removal has no impact on the running of the bike.

Andy
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Andy Long

2004 R1150RT : traded for:
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1986 K100RT
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"No man ever got very high by pulling other people down. The intelligent merchant does not knock his competitors. The sensible worker does not knock those who work with him. Don't knock your friends. Don't knock your enemies. Don't knock yourself." Alfred Lord Tennyson

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#653878 - 11/14/10 07:14 PM Re: Clogged Charcoal Canister? [Re: APDDave]
DrPaul Offline
Member

Registered: 07/21/07
Posts: 183
Loc: Oklahoma
Originally Posted By: APDDave
If I do away with it, will it upset the computer system on the bike? Will anything else have to be reset or readjusted?
Nope.
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Paul
2004 R1150RT
1974 R90/6
2002 R1150RT - sold
1987 K75S - sold
1996 Royal Star

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#653913 - 11/14/10 09:16 PM Re: Clogged Charcoal Canister? [Re: DrPaul]
kmac Offline
Member

Registered: 09/23/10
Posts: 2101
Loc: South Riverside County Ca.
wont hurt anything. and a little tip is to cut ALL vent hose on a slash cut angle or to split them at the end so that they will have a harder time clogging.

A square butt cut on the end of a hose leaves a small 1/8" opening that can be clogged by road grim or debris, but if you bologna cut the ends it leaves a much bigger tip to the cut and thus harder to clog. Or you can cut a 1" long slit from the end of the square butt cut hose up the center of the hose.
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'96 BMW r1100rt, '07 Yamaha WR250F, '65 Yamaha 305 Ym1,
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#653991 - 11/15/10 07:43 AM Re: Clogged Charcoal Canister? [Re: kmac]
John in NC Offline
Member

Registered: 02/17/04
Posts: 260
Loc: Raleigh, North Carolina
While your at it replace the plugs with Autolite APP3923.
It will run like a new bike.
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2004 R1150RT - Blue

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#653993 - 11/15/10 07:54 AM Re: Clogged Charcoal Canister? [Re: APDDave]
Wooster Offline
Member

Registered: 03/15/03
Posts: 1620
Loc: MA's North Shore
David,
The clever name for charcoal cannister removal is "cannisterectomy". Look under that name either here (BMWSportTouring) or at IBMWR.com for complete instructions. FWIW I removed my can several years ago with no ill effects.
Wooster
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#654309 - 11/15/10 11:25 PM Re: Clogged Charcoal Canister? [Re: Wooster]
JonathanE Offline
Member

Registered: 06/06/01
Posts: 2825
Loc: SF Bay Area, CA
Originally Posted By: Wooster
David,
The clever name for charcoal cannister removal is "cannisterectomy". Look under that name either here (BMWSportTouring) or at IBMWR.com for complete instructions. FWIW I removed my can several years ago with no ill effects.
Wooster


+1
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~ anything worth doing, is worth overdoing ~

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#654350 - 11/16/10 08:33 AM Re: Clogged Charcoal Canister? [Re: DrPaul]
Ken H. Offline
Turtle Whacks
Member

Registered: 04/13/03
Posts: 16404
Loc: Edmonton, AB Canada
Originally Posted By: SKYGZR
Remove the Worthless thing. This type of Crap don't belong on motorcycles.....get rid of it.

Well Iíve got to jump in here as at least one dissenter. The fuel vapor emission control system on vehicles, including on motorcycles, does serve one worthy purpose - it reduces fuel vapor emissions, a significant source of pollution of the air we all have to breath. Repair it donít remove it.
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Doctor Ė I need to learn how to relax faster.

If you want to ride tomorrow, ride quietly today.
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#654364 - 11/16/10 09:25 AM Re: Clogged Charcoal Canister? [Re: Ken H.]
ragtoplvr Offline
Member

Registered: 10/23/07
Posts: 415
Loc: Missouri,USA
Add one more dissenter. Additionally, you will get slightly better fuel economy with the canister, as the recovered vapors are burned. It might be difficult to measure, but it will occur.

Rod

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#654455 - 11/16/10 01:23 PM Re: Clogged Charcoal Canister? [Re: ragtoplvr]
ElevenFifty Offline
Member

Registered: 06/04/06
Posts: 953
Loc: Marietta, GA
An another dissenter ... easy enough to repair ... does no harm and is good for the air your grand children will breath
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