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Old 10-14-2009, 12:52 PM   #1
spqr OP
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Eh? F800 GS engine problems

The first storm of the season hit here yesterday, 9 inches in about 24 hours, which for central California is almost apocalyptic. As the rain poured down, so did the occasional hill side, onto the roads. When the wind picked up it blew down trees, into the power lines. I like to say that we have 360 days of good riding weather here and 5 days of great adventure riding weather. This kind of good blow seemed like an excellent test for the new F800 GS. They say this is the bike built to ride the world, any time, any place, any terrain or weather.
With no power, no internet and limited heat it was time to displace down out of the mountains and impose my self on my better equipped relations. Layering up, the GF in her car, me on the beast we set out. Blocked road and detours, made it an adventure, narrow twisty mountain lanes covered in wet pine needles and mini slides put a giant grin on my face.
Then it happened. Down in the flat land, in 3rd gear and at 40mph the bike died, just stopped firing. It seemed like water in the air box. I grabbed the clutch and stabbed the start button. The bike restarted. I down shifted and kept her at higher RPM (around 4k) and carried on. Three more times, all at low rpm and low gear the bike died.

So the question is: Why?

I have a few possibilities.

1. Poor design in the air box, water is getting into the cylinders.
2. My bike was made on a Monday after a long weekend (this would explain why the license plate light fell off after 500 miles and had to be lock nutted back on)
3. The 8 hours in the rain prior to running, when combined with the rain I was riding in wetted down the air filter and was restricting airflow.
4. There is some strange unknown electrical or mechanical flaw that I have not thought of.

I did go down to the mechanics and they plugged it into a GS 911 tool. No faults on the system. Thoughts? This bike should not have an issue with rain like this.
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Old 10-14-2009, 01:04 PM   #2
DolphinJohn
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Don't think it's water in the airbox.

Look in here:
http://www.advrider.com/forums/showt...=rain+stalling

And here:
http://www.advrider.com/forums/showp...5&postcount=40

My bike didn't stall at speed, but when I pulled in the clutch while riding in a torrential downpour.

I removed the canister and it has run perfectly ever since, rain or not.
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Old 10-14-2009, 01:05 PM   #3
BMWHillbilly
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Canister vent hose. It is the long hose that is hanging down in front of the rear tire. Reroute and cut the end at an angle or add a "T" to it. In heavy rain it tends to suck up water and clog/plug the charcoal canister. Lots of threads on the subject.
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Old 10-14-2009, 01:34 PM   #4
spqr OP
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Got it

Thanks, and I will advise my local BMW mechanics of the issue. I hope they fix the issue on the '11 model
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Subscribe to me, it helps me buy beer and keep the bike running. Comments make me even better money.


My ride Report, I will finish it some day.


You pay your money, and you take your chances.

1983 R65 (sold to good home)
2001 Kawasaki Concours (Stacked and totaled)
1997 BMW F650 (Still rolling)
1987 kawasaki EX 500
2009 BMW F800 GS ('nough said)
2006 Kawasaki KLR 650 (The Mule)
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Old 10-14-2009, 01:46 PM   #5
BMWHillbilly
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Quote:
Originally Posted by spqr
Thanks, and I will advise my local BMW mechanics of the issue. I hope they fix the issue on the '11 model
It's real easy to do. Save the $$ and do it yourself.
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Old 10-14-2009, 02:33 PM   #6
YetiGS
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Quote:
Originally Posted by BMWHillbilly
It's real easy to do. Save the $$ and do it yourself.
It should still be under warranty and thus free to have it fixed. Plus, if he has any further trouble with stalling it's on BMW's dime.

That said, I removed my canister.
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Old 10-14-2009, 06:24 PM   #7
ba_
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Quote:
Originally Posted by spqr
Thanks, and I will advise my local BMW mechanics of the issue. I hope they fix the issue on the '11 model
It supposedly is fixed on the '10...
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Old 10-15-2009, 06:16 AM   #8
JRWooden
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How is it fixed in the 2010 model?

Anybody know HOW this is supposed to be fixed it in the 2010 model?
I'd be surprised if a BMW dealership would remove your canister (esp. in CA) since it is a emissions related system...

If you want to do more reading here is another thread ;-)

http://f800riders.org/forum/showthread.php?t=25304
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Old 10-15-2009, 07:38 AM   #9
ba_
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Quote:
Originally Posted by JRWooden
Anybody know HOW this is supposed to be fixed it in the 2010 model?
I'd be surprised if a BMW dealership would remove your canister (esp. in CA) since it is a emissions related system...

If you want to do more reading here is another thread ;-)

http://f800riders.org/forum/showthread.php?t=25304
This is what I was told when I asked my local dealer:

"You mentioned your friend had a stalling issue, I spoke to my service mgr and that problem has been identified and the fix is easy…the vent hose is changed to a Y type…which prevents the vacuum and keeps the water out."
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Old 10-15-2009, 10:12 AM   #10
The Griz
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I've never had the stalling issue myself. However, now that I fully understand the fuel delivery system on this bike I truly believe it to be the canister drain hose routing. If it's routed wrong, it has the possibility of sucking up water and logging the charcoal filter material, therfore plugging the system. Re-route the hose, or do the t-mod that the others speak of.

Removing the canister completely is pointless. But hey, that's the American way right? To do shit just because you can? No regard for the planet we inhabit and the generations of humans that are going to live on it after us? We now know without a shadow of a doubt that this issue is not caused by the canister itself, rather the hoses surrounding it. So why not leave it on and route the hoses correctly? The canister keeps noxious fuel fumes from entering the atmosphere. That's just my opinion......

The Griz screwed with this post 10-15-2009 at 10:25 AM
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Old 10-15-2009, 10:55 AM   #11
DolphinJohn
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Quote:
Originally Posted by The Griz
I've never had the stalling issue myself. However, now that I fully understand the fuel delivery system on this bike I truly believe it to be the canister drain hose routing. If it's routed wrong, it has the possibility of sucking up water and logging the charcoal filter material, therfore plugging the system. Re-route the hose, or do the t-mod that the others speak of.

Removing the canister completely is pointless. But hey, that's the American way right? To do shit just because you can? No regard for the planet we inhabit and the generations of humans that are going to live on it after us? We now know without a shadow of a doubt that this issue is not caused by the canister itself, rather the hoses surrounding it. So why not leave it on and route the hoses correctly? The canister keeps noxious fuel fumes from entering the atmosphere. That's just my opinion......

Mr. Griz,

1. Which is it?

B. I removed my canister before it was discovered that it could be re-routed.

III. Regarding the "American way" comment, remember we Americans are the only ones that even have the canister on our bikes.

Maybe you should just ride a bicycle.










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Old 10-15-2009, 12:12 PM   #12
YetiGS
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Quote:
Originally Posted by The Griz
Removing the canister completely is pointless.
Totally disagree with you on this one Griz. Vapor lock comes to mind as one good reason.
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Old 10-15-2009, 02:54 PM   #13
The Griz
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Quote:
Originally Posted by YetiGS
Totally disagree with you on this one Griz. Vapor lock comes to mind as one good reason.
Exactly, and the reason for the "vapor lock" is due to the erronious routing of the canister drain tube, and the tube itself sucking up the water. Therefore, the problem is the drain tube, not the canister itself.

The Griz screwed with this post 10-15-2009 at 03:02 PM
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Old 10-15-2009, 02:56 PM   #14
The Griz
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Quote:
Originally Posted by DolphinJohn
Mr. Griz,

1. Which is it?

B. I removed my canister before it was discovered that it could be re-routed.

III. Regarding the "American way" comment, remember we Americans are the only ones that even have the canister on our bikes.

Maybe you should just ride a bicycle.
LOL! Speaking of the American way, it's a free country. I have a right to my opinion and to state it. As I said in my previous post: "That's just my opinion......" And it wasn't directed specifically at you or anyone, DJ.

It is the canister drain hose, not the canister itself.

P.S. Are you trying to move this into Head Explody?
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Old 10-15-2009, 03:07 PM   #15
The Griz
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spqr, I am confident that rerouting or t-modding your charcoal canister drain tube (#6 in the diagram) will solve your stalling issue.
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