gas building up pressure in the tank - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
Register Home FAQ Garage MTF Gallery Search Today's Posts Mark Forums Read Store Chat Room

Reply
 
Thread Tools Display Modes
Old 10-31-2010, 05:40 PM   #1
2_Late_I_Won
Senior MTF Member
 
2_Late_I_Won's Avatar
 
Join Date: Jul 2009
Location: Oklahoma
Posts: 508
MTF Member # 29025
Images: 3
Default gas building up pressure in the tank

Never had this problem before. Noticed today after mowing 2 acres. That I had a gas leak. Well come to find out it was leaking from the gas tank lid and doing ALOT of hissing. So I opened the gas cap/lid really slow and there was a bunch of pressure after I was able to take it off the gas bubbled and almost looked like it was boiling. I suck my finger in the gas and it was warm but not hot hot. I know the gas cap should have a vent hole. Where is it at? I know if it doesn't let air in as the gas goes out your tractor can die from lack of gas but I don't know what causes the pressure to build up inside the tank. I just want to get this fixed so I don't cause a fire and burn up a field let alone my tractor.

Thanks as always!!!
2_Late_I_Won is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-31-2010, 06:39 PM   #2
raytasch
Proud Member of the 1K Club
 
raytasch's Avatar
 
Join Date: Dec 2006
Location: TN
Posts: 1,167
MTF Member # 4585
Images: 2
Default Re: gas building up pressure in the tank

There is a pin point size hole in a small dome on top of the N tank. Stock N gas caps are not vented.
__________________
ray


Ford Jubilee-- restored, pulls a finish mower once in a while
Ford 850 -- the workhorse--does it all
IH CC 122--semi retired-awaiting restoration
JD 4300HST FWDA W/Loader--- another workhorse
Sears DGS6500
raytasch is offline   Reply With Quote Quick reply to this message
Old 10-31-2010, 06:49 PM   #3
Kirk-NJ
2000 Posts and climbing!!!
 
Kirk-NJ's Avatar
 
Join Date: Feb 2008
Location: NJ
Posts: 2,370
MTF Member # 9444
Images: 16
Default Re: gas building up pressure in the tank

Looks like from your picture it is an 8n. Your 8N owners manual may show a photo of the gas tank. The N gas tank has a bubble on it that has two holes (not in line) drilled to relieve the pressure. Sometimes these holes will be rusted or painted over. You can drill out these holes but it's just as EZ to get a vented gas cap.
That said this seem to be a problem so ford dealers were offering a new cap to solve this problem.
Supposedly return your gas cap with your serial # and get a new one. Worth a shot but I won't hold my breath.
IH had a similar program. You can do it online= no problem. And it's ship to you in a couple days.
If this is not your problem then I would look at how close your gas line is to your exhaust manifold and it rubber you may want to consider changing it.

Kirk
Kirk-NJ is offline   Reply With Quote Quick reply to this message
Old 10-31-2010, 06:57 PM   #4
JohnW
3K Poster!!!!
 
JohnW's Avatar
 
Join Date: Feb 2006
Location: Western KY
Posts: 3,572
MTF Member # 1445
Images: 3
Garage
Default Re: gas building up pressure in the tank

Last I read the gas cap swap had ended, go to NAPA and get a GOOD vented cap and don't look back. ALWAYS use extreme caution removing the cap if there is a chance of pressure build up, darn good way to have a fire on you as well as the tractor.
__________________
JohnW is offline   Reply With Quote Quick reply to this message
Old 10-31-2010, 09:54 PM   #5
2_Late_I_Won
Senior MTF Member
 
2_Late_I_Won's Avatar
 
Join Date: Jul 2009
Location: Oklahoma
Posts: 508
MTF Member # 29025
Images: 3
Default Re: gas building up pressure in the tank

Yeah specially with the gasoline vapors beeing more explosive than the actual fuel it's self. I think I'll just get a new cap and not worry about it. It seem really wierd though because I use this tractor almost every weekend and have never had this problem before.
2_Late_I_Won is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 05:23 AM   #6
Ken N Tx
Retired MTF Admin
 
Ken N Tx's Avatar
 
Join Date: Mar 2005
Location: Texas Denton/Krum
Posts: 25,709
MTF Member # 117
Images: 60
Garage
Default Re: gas building up pressure in the tank

Quote:
Originally Posted by raytasch View Post
There is a pin point size hole in a small dome on top of the N tank. Stock N gas caps are not vented.
Tank...
Attached Thumbnails
Click image for larger version

Name:	8NGAS1.jpg
Views:	25
Size:	30.0 KB
ID:	127235  
__________________
Ken N Tx is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 10:07 AM   #7
JohnW
3K Poster!!!!
 
JohnW's Avatar
 
Join Date: Feb 2006
Location: Western KY
Posts: 3,572
MTF Member # 1445
Images: 3
Garage
Default Re: gas building up pressure in the tank

Quote:
Originally Posted by 2_Late_I_Won View Post
It seem really wierd though because I use this tractor almost every weekend and have never had this problem before.
Yeah, come under the heading of RUST HAPPENS
__________________
JohnW is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 10:31 AM   #8
2_Late_I_Won
Senior MTF Member
 
2_Late_I_Won's Avatar
 
Join Date: Jul 2009
Location: Oklahoma
Posts: 508
MTF Member # 29025
Images: 3
Default Re: gas building up pressure in the tank

So how am I supposed to put a pin through that unless I remove the hood? I think I'll just stick with getting a vented cap LOL

"rust happens" LOL
2_Late_I_Won is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 10:39 AM   #9
Ken N Tx
Retired MTF Admin
 
Ken N Tx's Avatar
 
Join Date: Mar 2005
Location: Texas Denton/Krum
Posts: 25,709
MTF Member # 117
Images: 60
Garage
Default Re: gas building up pressure in the tank

Quote:
Originally Posted by 2_Late_I_Won View Post
So how am I supposed to put a pin through that unless I remove the hood? I think I'll just stick with getting a vented cap LOL

"rust happens" LOL
Yes, vented cap is the answer..
__________________
Ken N Tx is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 10:41 AM   #10
2_Late_I_Won
Senior MTF Member
 
2_Late_I_Won's Avatar
 
Join Date: Jul 2009
Location: Oklahoma
Posts: 508
MTF Member # 29025
Images: 3
Default Re: gas building up pressure in the tank

can I just drill a small hole in the old gas cap it's self?
2_Late_I_Won is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 10:46 AM   #11
Ken N Tx
Retired MTF Admin
 
Ken N Tx's Avatar
 
Join Date: Mar 2005
Location: Texas Denton/Krum
Posts: 25,709
MTF Member # 117
Images: 60
Garage
Default Re: gas building up pressure in the tank

Quote:
Originally Posted by 2_Late_I_Won View Post
can I just drill a small hole in the old gas cap it's self?
???? I have never tried it! ????
__________________
Ken N Tx is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 03:29 PM   #12
2_Late_I_Won
Senior MTF Member
 
2_Late_I_Won's Avatar
 
Join Date: Jul 2009
Location: Oklahoma
Posts: 508
MTF Member # 29025
Images: 3
Default Re: gas building up pressure in the tank

or maybe I can drill about 5 or 6 small holes like pin size holes. The vapors should be able to get out and if the fuel hits it the holes should be too small to get alot out
2_Late_I_Won is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 03:50 PM   #13
ryork
Old 'n Cheap
 
ryork's Avatar
 
Join Date: May 2010
Location: Springerton, Illinois
Posts: 175
MTF Member # 45292
Images: 9
Garage
Default Re: gas building up pressure in the tank

Bad idea if you are serious..get a vented cap. Vents are generally not a direct hole to the inside of a tank.
__________________
Bob
Old 'n Cheap
Bad part of being older...you can remember when things that now cost $10 were only 50 cents
46 2n - waitin on me to do something to it.
47 2n - my relaxin tractor.
64 4000 - w/7 ft finish mower, scoop and bushhog.
ryork is offline   Reply With Quote Quick reply to this message
Old 11-01-2010, 04:49 PM   #14
2_Late_I_Won
Senior MTF Member
 
2_Late_I_Won's Avatar
 
Join Date: Jul 2009
Location: Oklahoma
Posts: 508
MTF Member # 29025
Images: 3
Default Re: gas building up pressure in the tank

ok They cant be more than $12 anyways
2_Late_I_Won is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-01-2010, 07:57 PM   #15
JohnW
3K Poster!!!!
 
JohnW's Avatar
 
Join Date: Feb 2006
Location: Western KY
Posts: 3,572
MTF Member # 1445
Images: 3
Garage
Default Re: gas building up pressure in the tank

Last one I got at NAPA was under $10
__________________
JohnW is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
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 Off

Forum Jump


All times are GMT -4. The time now is 01:48 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Compact Tractor Reviews Tractor Reviews Snowblowers Lawn Mower Forum
My Tractor Forum Snow Thrower Power Equipment Forum
Combine Forum Snowblower Forum ATV and UTV Reviews