gasoline odor in shop

All other non-specific model Farmall / IH / CASE tractors. (Catch-All)

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.

gasoline odor in shop

Postby Dan W. » Mon Dec 17, 2012 4:47 pm

Last spring I bought a Case VAC and worked on it outside as time permitted. With the cold weather, I drove it into my small shop and have since noticed a stong gasoline odor coming from the gas cap vent. I know there are no leaks. Can I safely cover the gas cap and uncover it only when I run the engine? Thanks for your responses.
Dan W.
5+ Years
5+ Years
 
Posts: 56
Joined: Sat Sep 16, 2006 9:21 am
Location: western NY

Re: gasoline odor in shop

Postby AL Farmall Boy » Wed Dec 26, 2012 3:04 pm

Yes. You're gonna have funny smells, leaks, etc. from these old tractors. Might have some bad/old fuel in there too. I'd drain the tank, clean it out good, and refill with fresh gas. Probably needs a cleaning anyways.
AL Farmall Boy
501 Club
501 Club
 
Posts: 1213
Joined: Tue Aug 10, 2010 6:38 pm
Zip Code: 35111

Re: gasoline odor in shop

Postby John *.?-!.* cub owner » Wed Dec 26, 2012 4:31 pm

due to expansion and contraction from heating and cooling it needs to be able to vent some. The vent holes in the cap may be a little larger than normal, or the gas may just be rank smelling from age if it is pretty old.
"The Constitution is not an instrument for the government
to restrain the people, it is an instrument for the people to restrain the
government lest it come to dominate our lives and interests." Patrick Henry
User avatar
John *.?-!.* cub owner
Team Cub Guide
Team Cub Guide
 
Posts: 19473
Joined: Sun Feb 02, 2003 2:09 pm
Location: Mo, Potosi
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.

Re: gasoline odor in shop

Postby beaconlight » Wed Dec 26, 2012 6:27 pm

The smell of gasoline always scares me. I did gas testing in Telephone Co. Cable vaults. Gas of many types can enter telephone underground cable ducts and try to get past the seals into the basement cable vaults. There have been explosions caused by these gases therefore tests are made similar to those in mines. Lower explosive Limit (LEL) for gasoline if I remember correctly is 1.2%. Upper explosive limit (UEL) is 7.2% by volume. This means that below LEL it wont explode. I will just smell bad. Above UEL it won't explode either it will smell stronger. The fly in the ointment is that when you vent to get below the UEL you have to pass through the explosive area. You don't want any sparks at that point.

Some reading about explosive meters.

http://www.rkiinstruments.com/pages/faq ... EL_UEL.htm

http://www.engineeringtoolbox.com/explo ... d_423.html
Bill

"Life's tough.It's even tougher if you're stupid."
- John Wayne

" We hang petty thieves and appoint the great ones to public office."
- Aesop
User avatar
beaconlight
Cub Pro
Cub Pro
 
Posts: 7701
Joined: Thu Aug 19, 2004 2:31 pm
Location: NY Staten Island & Franklin
Zip Code: 10314


Return to Farmall / IH / CASE

Who is online

Users browsing this forum: No registered users and 2 guests