What does this hose do?

smenon · 06-28-2012, 09:37 AM

So, I was looking at the underside of my F800GS during my first oil change and happened to see this hose sticking out, somewhere between the cat and around the place where the center stand attaches. I am usually wary of objects pointing out, but the end looks cut sharp and shouldn't be something that snapped. I am assuming it has been always that way and that this is some sort of a breather pipe. I don't see any flashing light on the dash, and no cause of alarm generally on the bike. But still, is this normal; do you folks have it on your bikes as well?

EggChaser · 06-28-2012, 11:11 AM

It's probably the breather/overflow from the fuel filler area. R1200GS had at least one of those so assume the other models have them as well.

tofire409 · 06-28-2012, 11:56 AM

Quote:

Originally Posted by EggChaser

It's probably the breather/overflow from the fuel filler area. R1200GS had at least one of those so assume the other models have them as well.

+1

http://www.maxbmwmotorcycles.com/fic...8&rnd=05012012

under fuel supply...

mapleleafalumnus · 06-28-2012, 11:59 AM

Battery overflow tube?

itsatdm · 06-28-2012, 12:04 PM

It is a drain hose from your charcoal cannister. There is a recall on it to put on a syphon break and relocate it. It had a bad habit of sucking up water and injecting it into the throttle body.

1P8RIOT · 06-28-2012, 12:21 PM

It could also get blown against the cat and melt shut.

That would not be good.

k Dog · 06-28-2012, 05:48 PM

Spare tube for adding air into the tyres. I don't know why yours doesn't have the proper fitting on it.

smenon · 06-29-2012, 07:07 AM

Quote:

Originally Posted by k Dog

Spare tube for adding air into the tyres. I don't know why yours doesn't have the proper fitting on it.

Thanks. That made my day

smenon · 06-29-2012, 07:19 AM

Quote:

Originally Posted by itsatdm

It is a drain hose from your charcoal cannister. There is a recall on it to put on a syphon break and relocate it. It had a bad habit of sucking up water and injecting it into the throttle body.

Thanks, I'll get to it for the 6k service. It is a bad location to plumb a hose out, which is what made me curious. I picked this up new 3 months back, and one of the reasons was that BMW has had this model unchanged for 5 years and plenty of time to fix all nagging issues.

itsatdm · 06-29-2012, 10:37 AM

If it is that new, it has the mod. All it is, is a T fitting at the other end that allows air in to prevent vacuum from sucking up water.

It is no big deal, cut the hose shorter or move it.

06-28-2012, 09:37 AM	#1
smenon ^OP Adventurer Joined: May 2012 Location: Seattle Oddometer: 96	What does this hose do? So, I was looking at the underside of my F800GS during my first oil change and happened to see this hose sticking out, somewhere between the cat and around the place where the center stand attaches. I am usually wary of objects pointing out, but the end looks cut sharp and shouldn't be something that snapped. I am assuming it has been always that way and that this is some sort of a breather pipe. I don't see any flashing light on the dash, and no cause of alarm generally on the bike. But still, is this normal; do you folks have it on your bikes as well?

06-28-2012, 11:59 AM	#4
mapleleafalumnus Demigod Joined: Oct 2008 Location: Frozen Wasteland Oddometer: 184	Battery overflow tube? __________________ "Illegitimati non carborundum" -Gen. Joseph Stilwell

06-28-2012, 12:04 PM	#5
itsatdm NoMoTDM still Gary Joined: Jun 2004 Location: Columbia, Ca. Oddometer: 3,709	It is a drain hose from your charcoal cannister. There is a recall on it to put on a syphon break and relocate it. It had a bad habit of sucking up water and injecting it into the throttle body. __________________ BMW Motorrad USA customer service: "We make superior motorcycles and continue to improve them."

06-28-2012, 12:21 PM	#6
1P8RIOT Gnarly Adventurer Joined: Dec 2007 Location: Carson CA. Oddometer: 317	It could also get blown against the cat and melt shut. That would not be good. __________________ A ship in a port is safe but that is not what ships are built for. - Mom I DIDN'T BUILD IT TO DECORATE THE GARAGE. - me '84 Harley FXR 250,000 miles and counting. '09 F800GS YEAH BABY!!!

06-28-2012, 05:48 PM	#7
k Dog Nomad Joined: May 2005 Location: Kamloops, BC Canada Oddometer: 125	Spare tube for adding air into the tyres. I don't know why yours doesn't have the proper fitting on it. __________________ K Dog 2011 F800GS 2005 BMW R1150GS Adventure

06-28-2012, 11:11 AM	#2
EggChaser Studly Adventurer Joined: Aug 2008 Location: Hamsphire/Surrey Borders Oddometer: 536	It's probably the breather/overflow from the fuel filler area. R1200GS had at least one of those so assume the other models have them as well.

06-29-2012, 10:37 AM	#10
itsatdm NoMoTDM still Gary Joined: Jun 2004 Location: Columbia, Ca. Oddometer: 3,709	If it is that new, it has the mod. All it is, is a T fitting at the other end that allows air in to prevent vacuum from sucking up water. It is no big deal, cut the hose shorter or move it. __________________ BMW Motorrad USA customer service: "We make superior motorcycles and continue to improve them."

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