leaking a little gas

h0yitsdom · July 11th, 2011, 02:03 PM

noticed a distinct smell in my garage today when trying to get something out, looked at my bike and saw dampness from gas which appears to be seeping out of a rubber hose. i'm having trouble finding what this hose is connected to on all of the parts diagrams, not seeing any hose in a similar U-shape. so i took some pictures and hopefully someone can help me with a part number or at least idea on how to replace in terms of size of the hose. there is only 1 clamp on it which is on the bottom where it is actually leaking.

this is the other side of the hose and where it connects

i just filled up and have only ridden about 15 miles on my new tank, normally i leave my petcock on when i park it in my garage for the night could this be part of the problem? I park it straight up on my centerstand however and not on the sidestand if that makes a difference

kkim · July 11th, 2011, 02:37 PM

that looks like the crankcase vent hose?? can't really tell from the pics. is your oil level at the proper level in the sight glass or has the bike been on it's side recently?

h0yitsdom · July 11th, 2011, 02:44 PM

the hose is the same shape, however it isn't connected to a plastic piece like this

its going directly in to another black piece, no clear plastic piece like the picture above

the bike was downed by an old owner but i have had it for almost 2000 miles and it hasn't been downed since then

kkim · July 11th, 2011, 02:53 PM

how's your oil level in the sight glass. Changed oil recently?

yep, that's your crankcase vent tube. what does it connect to if not that white piece?

h0yitsdom · July 11th, 2011, 02:54 PM

went and looked at it again, it looks like its going to the air filter box/area on the top

my oil level is midway between half full and full but the bike is cold right now and hasn't been run since yesterday. i changed the oil about 1500 miles ago with rotella t6 synthetic but the oil isn't clear like these pictures, its kind of darker brown

kkim · July 11th, 2011, 02:55 PM

are you reading the oil level with the bike perfectly vertical and on a flat surface?

h0yitsdom · July 11th, 2011, 02:58 PM

yeah i took it off the centerstand and stood it up straight, its not all the way full but more then half way if that makes sense

kkim · July 11th, 2011, 03:03 PM

okay, sounds like your oil level is correct. are you sure it's gas you're seeing and not oil?

If oil, I would take the hose off, clean up that area and check the hose for a split? if the hose looks good, pull the airfilter and check the bottom of the airbox. does it have oil in it? if so, clean it out and see if your problem continues.

h0yitsdom · July 11th, 2011, 03:06 PM

when i changed the oil i also put some new oil in the air filter, maybe i put too much?

but it smells very strongly like gas and its not dark like oil. i didn't want to pull off the hose and get splashed with gas but i'll take a look at it now

kkim · July 11th, 2011, 03:07 PM

Quote:

Originally Posted by h0yitsdom

when i changed the oil i also put some new oil in the air filter, maybe i put too much?

not if you can see the oil level line in the sight glass.

h0yitsdom · July 11th, 2011, 03:08 PM

i mean on the air filter, i poured oil onto it like the guide said and wrung it out but maybe not enough

kkim · July 11th, 2011, 03:09 PM

could it be gas from the carbs that are right above it? if so, you should be able to see the carbs are "wet" from a leak. are they wet?

kkim · July 11th, 2011, 03:10 PM

Quote:

Originally Posted by h0yitsdom

i mean on the air filter, i poured oil onto it like the guide said and wrung it out but maybe not enough

did you clean the filter before oiling? what did you use to clean it?

h0yitsdom · July 11th, 2011, 03:22 PM

i used dish washing soap when i cleaned it. i just looked at the hose again and it was just oil, i think the gas smell is from my tank since it is full

it seems like the brass clip that holds the vent hose down however is really lose and isn't tightening good enough to seal the hose which is why there is seepage.

my carbs aren't leaking but from now on i'm going to turn the petcock to off whenever i'm not riding just in case

kkim · July 11th, 2011, 03:25 PM

cool.

you can either bend that metal clip a bit tighter by taking it off and pulling it so it makes a smaller diameter circle or use a tie wrap in it's place to hold the tube onto the crankcase vent.

h0yitsdom · July 11th, 2011, 04:57 PM

i just got some normal hose clamps from my job instead that screw down on it. should work ok

thanks a lot for the quick help

July 11th, 2011, 02:03 PM	#1
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	leaking a little gas noticed a distinct smell in my garage today when trying to get something out, looked at my bike and saw dampness from gas which appears to be seeping out of a rubber hose. i'm having trouble finding what this hose is connected to on all of the parts diagrams, not seeing any hose in a similar U-shape. so i took some pictures and hopefully someone can help me with a part number or at least idea on how to replace in terms of size of the hose. there is only 1 clamp on it which is on the bottom where it is actually leaking. this is the other side of the hose and where it connects i just filled up and have only ridden about 15 miles on my new tank, normally i leave my petcock on when i park it in my garage for the night could this be part of the problem? I park it straight up on my centerstand however and not on the sidestand if that makes a difference

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July 11th, 2011, 02:37 PM	#2
kkim Join Date: Nov 2008 Posts: Too much.	that looks like the crankcase vent hose?? can't really tell from the pics. is your oil level at the proper level in the sight glass or has the bike been on it's side recently?

July 11th, 2011, 02:44 PM	#3
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	the hose is the same shape, however it isn't connected to a plastic piece like this its going directly in to another black piece, no clear plastic piece like the picture above the bike was downed by an old owner but i have had it for almost 2000 miles and it hasn't been downed since then

July 11th, 2011, 02:53 PM	#4
kkim Join Date: Nov 2008 Posts: Too much.	how's your oil level in the sight glass. Changed oil recently? yep, that's your crankcase vent tube. what does it connect to if not that white piece?

July 11th, 2011, 02:54 PM	#5
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	went and looked at it again, it looks like its going to the air filter box/area on the top my oil level is midway between half full and full but the bike is cold right now and hasn't been run since yesterday. i changed the oil about 1500 miles ago with rotella t6 synthetic but the oil isn't clear like these pictures, its kind of darker brown

July 11th, 2011, 02:55 PM	#6
kkim Join Date: Nov 2008 Posts: Too much.	are you reading the oil level with the bike perfectly vertical and on a flat surface?

July 11th, 2011, 02:58 PM	#7
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	yeah i took it off the centerstand and stood it up straight, its not all the way full but more then half way if that makes sense

July 11th, 2011, 03:03 PM	#8
kkim Join Date: Nov 2008 Posts: Too much.	okay, sounds like your oil level is correct. are you sure it's gas you're seeing and not oil? If oil, I would take the hose off, clean up that area and check the hose for a split? if the hose looks good, pull the airfilter and check the bottom of the airbox. does it have oil in it? if so, clean it out and see if your problem continues.

July 11th, 2011, 03:06 PM	#9
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	when i changed the oil i also put some new oil in the air filter, maybe i put too much? but it smells very strongly like gas and its not dark like oil. i didn't want to pull off the hose and get splashed with gas but i'll take a look at it now

July 11th, 2011, 03:08 PM	#11
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	i mean on the air filter, i poured oil onto it like the guide said and wrung it out but maybe not enough

July 11th, 2011, 03:09 PM	#12
kkim Join Date: Nov 2008 Posts: Too much.	could it be gas from the carbs that are right above it? if so, you should be able to see the carbs are "wet" from a leak. are they wet?

July 11th, 2011, 03:22 PM	#14
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	i used dish washing soap when i cleaned it. i just looked at the hose again and it was just oil, i think the gas smell is from my tank since it is full it seems like the brass clip that holds the vent hose down however is really lose and isn't tightening good enough to seal the hose which is why there is seepage. my carbs aren't leaking but from now on i'm going to turn the petcock to off whenever i'm not riding just in case

July 11th, 2011, 03:25 PM	#15
kkim Join Date: Nov 2008 Posts: Too much.	cool. you can either bend that metal clip a bit tighter by taking it off and pulling it so it makes a smaller diameter circle or use a tie wrap in it's place to hold the tube onto the crankcase vent.

July 11th, 2011, 04:57 PM	#16
h0yitsdom newbie newbie Name: Dominic Location: socal Join Date: Apr 2011 Motorcycle(s): 2006 Ninja ex250 Posts: 32	i just got some normal hose clamps from my job instead that screw down on it. should work ok thanks a lot for the quick help