ADVrider

Go Back   ADVrider > Bikes > Orange Crush
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-15-2014, 10:08 PM   #1
gearheadE30 OP
Studly Adventurer
 
gearheadE30's Avatar
 
Joined: Jan 2012
Location: Indiana
Oddometer: 770
950 pouring out fuel when dropped

I was out riding some trails earlier today that were quite muddy from all the snowmelt we've had, and of course Mefos don't like mud... needless to say, I'm really glad I invested in those 990 tank guards now...

at any rate, whenever the bike was on its side, it just poured fuel out of the bottom tank. I've not been around too many LC8s, but I don't think this should happen... I have done the flapendectomy, since I had the problems associated with it, and I had never had the bike down before I did that. What's the deal? Do they just leak and I need to pick the bike up faster, or is there something going on in the tank caps that needs to be fixed? Being in a rush to pick your bike up because it's pouring gas everywhere is never fun.
__________________
1986 Yamaha XT350 For Sale
2005.5 KTM 950 Adventure and 2012 KTM 200 XC-W
1991 BMW 318is turbo track car
1989 Chevrolet Caprice Classic Wagon sleeper tow car
3 Months Exploring the US on a 950
gearheadE30 is offline   Reply With Quote
Old 03-16-2014, 01:35 AM   #2
Sumi
Beastly Adventurer
 
Sumi's Avatar
 
Joined: Mar 2010
Location: Hungary
Oddometer: 1,678
Quote:
Originally Posted by gearheadE30 View Post
I was out riding some trails earlier today that were quite muddy from all the snowmelt we've had, and of course Mefos don't like mud... needless to say, I'm really glad I invested in those 990 tank guards now...

at any rate, whenever the bike was on its side, it just poured fuel out of the bottom tank. I've not been around too many LC8s, but I don't think this should happen... I have done the flapendectomy, since I had the problems associated with it, and I had never had the bike down before I did that. What's the deal? Do they just leak and I need to pick the bike up faster, or is there something going on in the tank caps that needs to be fixed? Being in a rush to pick your bike up because it's pouring gas everywhere is never fun.
Yeah, it's probably because of the flapendectomy. At least mine is doing the same thing since. Before cutting the little rubbers off, it didn't leak any fuel when bike was on its side.
__________________
2005.5 950 Adventure (with 265mm travel suspension)
Sumi is offline   Reply With Quote
Old 03-16-2014, 09:08 AM   #3
gearheadE30 OP
Studly Adventurer
 
gearheadE30's Avatar
 
Joined: Jan 2012
Location: Indiana
Oddometer: 770
great...and it looks like there's really no way of fixing that problem, that I've seen at least. Well, I guess there's a little more motivation for not crashing...
__________________
1986 Yamaha XT350 For Sale
2005.5 KTM 950 Adventure and 2012 KTM 200 XC-W
1991 BMW 318is turbo track car
1989 Chevrolet Caprice Classic Wagon sleeper tow car
3 Months Exploring the US on a 950
gearheadE30 is offline   Reply With Quote
Old 03-16-2014, 02:48 PM   #4
keener
Speed changes you.
 
keener's Avatar
 
Joined: Feb 2010
Location: Toronto, Canada
Oddometer: 922
Have you routed the vents up to top of the dash behind the head light and T to the foot peg?

Since I've done that it solved the problem with fuel boiling out of the vents issue and we the bike is taking a nap it takes much longer for fuel to come out of the vents.

Sent from my LG-D803 using Tapatalk
__________________
04 ADV 950
keener is offline   Reply With Quote
Old 03-16-2014, 03:26 PM   #5
gearheadE30 OP
Studly Adventurer
 
gearheadE30's Avatar
 
Joined: Jan 2012
Location: Indiana
Oddometer: 770
Quote:
Originally Posted by keener View Post
Have you routed the vents up to top of the dash behind the head light and T to the foot peg?

Since I've done that it solved the problem with fuel boiling out of the vents issue and we the bike is taking a nap it takes much longer for fuel to come out of the vents.

Sent from my LG-D803 using Tapatalk
As an 05.5 that was never retrofitted, I don't have the T. My vents are not routed to the dash area; they just go straight down. Definitely makes sense why that would help. I'll have to reroute it and go find some more trails to do some 'testing'
__________________
1986 Yamaha XT350 For Sale
2005.5 KTM 950 Adventure and 2012 KTM 200 XC-W
1991 BMW 318is turbo track car
1989 Chevrolet Caprice Classic Wagon sleeper tow car
3 Months Exploring the US on a 950
gearheadE30 is offline   Reply With Quote
Old 03-17-2014, 07:12 AM   #6
keener
Speed changes you.
 
keener's Avatar
 
Joined: Feb 2010
Location: Toronto, Canada
Oddometer: 922
I can't recall any model that comes with the T connection I was talking about. I made it myself. Two vents join with a T at top of the headlight and one vent line runs down from the T to some where bellow a foot peg.

It's important that no vent gets pinched closed.
__________________
04 ADV 950
keener is offline   Reply With Quote
Old 03-17-2014, 04:46 PM   #7
Sumi
Beastly Adventurer
 
Sumi's Avatar
 
Joined: Mar 2010
Location: Hungary
Oddometer: 1,678
IMO the most elegant way is to undo the flapendectomy... the bike should and will run perfectly without this mod. (Mine did for years, and when I had fueling issues it turned out it was a faulty fuel pump, and not the venting.. so it's proven that it can work 100% perfect with the flaps in place. And that way it won't leak a drop of fuel if it's on its side - only from the carb bowls)
__________________
2005.5 950 Adventure (with 265mm travel suspension)
Sumi is offline   Reply With Quote
Old 03-17-2014, 06:25 PM   #8
gearheadE30 OP
Studly Adventurer
 
gearheadE30's Avatar
 
Joined: Jan 2012
Location: Indiana
Oddometer: 770
Quote:
Originally Posted by keener View Post
I can't recall any model that comes with the T connection I was talking about. I made it myself. Two vents join with a T at top of the headlight and one vent line runs down from the T to some where bellow a foot peg.

It's important that no vent gets pinched closed.
The T was a recall item, or at least I have a TSB from KTM about it. It was like a crossover between the tops of the two tanks. But yeah, that sounds like a pretty straightforward way to do it.

Quote:
Originally Posted by Sumi View Post
IMO the most elegant way is to undo the flapendectomy... the bike should and will run perfectly without this mod. (Mine did for years, and when I had fueling issues it turned out it was a faulty fuel pump, and not the venting.. so it's proven that it can work 100% perfect with the flaps in place. And that way it won't leak a drop of fuel if it's on its side - only from the carb bowls)
Believe me, if I could I would, but you can't just buy the flap pieces. You have to buy the whole cap, which just isn't worth it at over $130 a pop iirc.
__________________
1986 Yamaha XT350 For Sale
2005.5 KTM 950 Adventure and 2012 KTM 200 XC-W
1991 BMW 318is turbo track car
1989 Chevrolet Caprice Classic Wagon sleeper tow car
3 Months Exploring the US on a 950
gearheadE30 is offline   Reply With Quote
Old 03-17-2014, 09:56 PM   #9
Sumi
Beastly Adventurer
 
Sumi's Avatar
 
Joined: Mar 2010
Location: Hungary
Oddometer: 1,678
Quote:
Originally Posted by gearheadE30 View Post
The T was a recall item, or at least I have a TSB from KTM about it. It was like a crossover between the tops of the two tanks. But yeah, that sounds like a pretty straightforward way to do it.



Believe me, if I could I would, but you can't just buy the flap pieces. You have to buy the whole cap, which just isn't worth it at over $130 a pop iirc.
IMO gerhead is not talking about the crossover recall. (Don't do that)

And I didn't know the rubber flaps couldn't be bought separetly:( Doesn't sound good..
__________________
2005.5 950 Adventure (with 265mm travel suspension)
Sumi is offline   Reply With Quote
Old 03-18-2014, 10:13 AM   #10
Head2Wind
MotorcycleMayhem
 
Head2Wind's Avatar
 
Joined: Mar 2006
Location: NorthWet Washington
Oddometer: 2,501
IMO the fuel caps should NEVER leak raw fuel, however raw fuel coming out the vent hoses IMO is 'OK'. I ran many a mile with the OEM caps/flaps after removing the OEM evap systems then adding tank venting like this:



There was a recent reference to a company in Italy (i think) that offers a complete 'key set', in that kit is the ignition switch, the seat lock as well as two fuel caps and the price was very reasonable..... but of course I cannot find it.

The other ALT would be to replace the caps with 'spin on' billet caps.
__________________
“The mind is sharper and keener in seclusion and uninterrupted solitude. --- Be alone, that is the secret of invention; be alone, that is when ideas are born.” - Nikola Tesla
2006 KTM 970 frankinADVsmSD
ADVmachines™ Proven Solutions for your Worldwide Adventures...www.ADVmachines.com
Head2Wind is offline   Reply With Quote
Old 03-18-2014, 11:41 AM   #11
keener
Speed changes you.
 
keener's Avatar
 
Joined: Feb 2010
Location: Toronto, Canada
Oddometer: 922
Quote:
Originally Posted by Head2Wind View Post
IMO the fuel caps should NEVER leak raw fuel, however raw fuel coming out the vent hoses IMO is 'OK'. I ran many a mile with the OEM caps/flaps after removing the OEM evap systems then adding tank venting like this:



There was a recent reference to a company in Italy (i think) that offers a complete 'key set', in that kit is the ignition switch, the seat lock as well as two fuel caps and the price was very reasonable..... but of course I cannot find it.

The other ALT would be to replace the caps with 'spin on' billet caps.
Do I see a fuel filter in the vent line? Whats that for Ken?
__________________
04 ADV 950
keener is offline   Reply With Quote
Old 03-18-2014, 12:23 PM   #12
Sumi
Beastly Adventurer
 
Sumi's Avatar
 
Joined: Mar 2010
Location: Hungary
Oddometer: 1,678
There are two vents per tank. One at the front and one at the middle. The front one (the one that H2W made the fancy vent for) is connected to the fuel cap, and if you cut the flaps off the rubber it'll be freely flowing fuel out through it when the bike is on its side, and the fuel lever is over the cap. It doesn't flow out the cap, but through the front vent - but it does flow through the little labyrinth in the cap.
__________________
2005.5 950 Adventure (with 265mm travel suspension)
Sumi is offline   Reply With Quote
Old 03-18-2014, 04:09 PM   #13
gefr
Life is a trip
 
gefr's Avatar
 
Joined: Nov 2005
Location: East Med, Greece
Oddometer: 3,754
I agree flapendectomy is not a good idea.

That is if you keep your vents free flowing. The middle hose I believe is draining the spilled fuel and water that collects around the fuel entrance to the tanks.
Cheers.
gefr is online now   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 09:55 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014