Harley Davidson Forums

Loading


Hello

Guest

Welcome to the harley davidson forum. Join our discussion today for FREE!

CREATE ACCOUNT

Membership Benefits

Get your questions answered by harley davidson community gurus and industry experts. Exchange your experience with another members. Access full features forum. Get a members discounts for your harley parts & accessories.

Gas leaking out of gas cap

Softail Models

Reply
 
Thread Tools Display Modes
Old Nov 20th, 2009, 03:48 AM     #1
New Family
Ride: 2001 Night Train
 
Join Date: Nov 20th, 2009
Location: LA (Lower Alabama)
Posts: 7
01 Night Train is an unknown quantity at this point
Gas leaking out of gas cap

I have a 2001 Night Train. I have changed may parts on the bike to include the gas cap. I am using a Kuryakyn gas cap. The problem I am having is every once in a while after I fill up with gas, the cap will leak fuel all over the gas tank, which then drips down on a hot motor. It doesn't always do this; only when I try to put in as much fuel as I can for a long ride. Maybe I just missed the section in the owners manual that said do not "top off" the tank. Other than this issue the bike runs great. I appreciate any help anyone can give me on this.

Thanks...Rob
01 Night Train is offline   Reply With Quote
Old Nov 20th, 2009, 04:57 AM     #2
Warming The Wheels
Ride: 2008 FLSTC
 
GroundHawg's Avatar
 
Join Date: Aug 5th, 2009
Location: Xenia, Ohio
Posts: 148
My Mood: My Mood
GroundHawg is an unknown quantity at this point
Re: Gas leaking out of gas cap

I had the same problem with an 08 Heritage - stock gas cap. After I filled up I would tighten it until it started clicking. Turns out it wasn't fully seated. I know turn until it clicks, then press down on it and turn some more - it always tightens up a bit more. Haven't had a problem since.

Mine didn't start leaking until I was moving - and it didn't drip on the engine - it ran back the tank and got on my pants...
GroundHawg is offline   Reply With Quote
Old Nov 20th, 2009, 05:38 AM     #3
New Family
Ride: 2001 Night Train
 
Join Date: Nov 20th, 2009
Location: LA (Lower Alabama)
Posts: 7
01 Night Train is an unknown quantity at this point
Re: Gas leaking out of gas cap

GroundHawg,

Thanks for the help. I will try to tighten it up a little more the next time out. I was thinking it could be a venting issue; but the bike runs great and doesn't foul plugs. That leads me to believe that everything is venting properly. Usually if you have a venting issue fuel will be forced past the bowl and lead to plug fouling. I am hoping others may have had the same problem and can weigh in on this.

thanks again for your help,
Rob
01 Night Train is offline   Reply With Quote
Old Nov 20th, 2009, 05:50 AM     #4
Community Star
Ride: 2004 Heritage classic.
 
SeaRider04's Avatar
 
Join Date: Apr 1st, 2008
Location: PA.
Posts: 373
My Mood: My Mood
SeaRider04 is an unknown quantity at this point
Re: Gas leaking out of gas cap

Bike on kickstand, leans to the left which might bring the filler neck up higher, topping is off to the neck may leaks out when the Bike is up right !!!. Just a though.
__________________
*** If you don't want to stand behind our troops, feel free to stand in front of them. ***
SeaRider04 is offline   Reply With Quote
Old Nov 20th, 2009, 07:05 AM     #5
New Family
Ride: 2001 Night Train
 
Join Date: Nov 20th, 2009
Location: LA (Lower Alabama)
Posts: 7
01 Night Train is an unknown quantity at this point
Re: Gas leaking out of gas cap

I agree with you 100% that that neck is lower when the bike is upright. I just never had this problem on any of my other bikes. I figured maybe someone else had this issue as well and could shed some light on it for me.

But, thanks for your input.

Rob
01 Night Train is offline   Reply With Quote
Old Nov 20th, 2009, 10:05 AM     #6
Community Guru Wannabe
Ride: FLHTCU
 
RetiredJake's Avatar
 
Join Date: Apr 19th, 2009
Location: Middle Tennessee
Posts: 867
My Mood: My Mood
RetiredJake is an unknown quantity at this point
Re: Gas leaking out of gas cap

There was a thread on this a week or two back. One member found that when the filler neck area was painted, some of it got on the sealing area for the cap. He cleaned it up and his problem went away.

In any case, if you are leaking gas onto a hot engine, you have a dangerous condition and need to fix it ASAP.
__________________
Roaming the country, Tasting the wine,
Having fun, Life is good
RetiredJake is offline   Reply With Quote
Old Nov 20th, 2009, 10:19 AM     #7
Retired Moderators
Ride: 2004 Sportster XL1200R
 
NEWHD74FAN's Avatar
 
Join Date: Aug 24th, 2008
Location: Camarillo, CA
Posts: 8,276
My Mood: My Mood
NEWHD74FAN is an unknown quantity at this point
Re: Gas leaking out of gas cap

Good call...RJ has you covered...look in the Search thread and type in couple key words and you will find the threads regarding riders finding excess paint in the seating area of the gas cap, which they carefullly scraped off and problem was solved.

You should be able to fill up a "sealed cap w/ closed evaporative controlled system." Very likely the seal ring on your gas cap is not seating along the entire perimeter. Check the tank carefully and scrape only with wood or hard plastic/fiberglass stick gently to not nick the contact surface.
__________________
* Please click "Self Help Tips" tab for service tips, diagnostic codes & such * ;o) * Please click "Search" tab and keywords to find related threads *

Last edited by NEWHD74FAN; Nov 20th, 2009 at 10:53 PM.
NEWHD74FAN is offline   Reply With Quote
Old Nov 20th, 2009, 03:59 PM     #8
Play The Throttle
Ride: 03 dyna
 
Join Date: Sep 24th, 2009
Posts: 189
My Mood: My Mood
fwcole is an unknown quantity at this point
Re: Gas leaking out of gas cap

Probably just a slight overfill, a buddy of mine used to always have that problem.
fwcole is offline   Reply With Quote
Old Nov 26th, 2009, 07:48 AM     #9
Warming The Wheels
Ride: 2012 Ultra Classic Limited
 
little_earl's Avatar
 
Join Date: Sep 21st, 2008
Location: Memphis
Posts: 144
My Mood: My Mood
little_earl is an unknown quantity at this point
Re: Gas leaking out of gas cap

Quote: Originally Posted by GroundHawg View Post
I had the same problem with an 08 Heritage - stock gas cap. After I filled up I would tighten it until it started clicking. Turns out it wasn't fully seated. I know turn until it clicks, then press down on it and turn some more - it always tightens up a bit more. Haven't had a problem since.

Mine didn't start leaking until I was moving - and it didn't drip on the engine - it ran back the tank and got on my pants...
I had the same trouble out of my heritage this summer. The Oklahoma Harley dealer said the vent on the cap was bad and poped it out with air. This worked for about 100 miles then I had to really push down on the cap to seal it. The dealer here in Memphis replaced it and I have not had any trouble out of it since.
__________________
2010 Ultra
little_earl is offline   Reply With Quote
Old Nov 26th, 2009, 01:54 PM     #10
Contributor
Ride: 2007 Streetbob
 
Jack Klarich's Avatar
 
Join Date: Sep 25th, 2009
Location: Jacksonville, Florida
Posts: 16,668
My Mood: My Mood
Jack Klarich has a spectacular aura aboutJack Klarich has a spectacular aura about
Re: Gas leaking out of gas cap

Could be a big problem here I saw a bike burn it aint a pretty site
Jack Klarich is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gas leaking ironhorserdr Sportster Models 9 Aug 19th, 2010 05:37 PM
leaking oil ultraClassik Transmission 5 Jun 15th, 2010 12:25 AM
leaking transmission neadaporsh Transmission 11 Dec 1st, 2009 04:52 PM
oil leaking punkin Oil 0 Jun 9th, 2009 06:38 PM
she is a leaking tattooedjesusfreak Sportster Models 3 Feb 12th, 2008 11:20 AM