gasoline odor in shop

All other non-specific model Farmall / IH / CASE tractors. (Catch-All)
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.
Dan W.
10+ Years
10+ Years
Posts: 57
Joined: Sat Sep 16, 2006 9:21 am
Location: western NY

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.

User avatar
AL Farmall Boy
10+ Years
10+ Years
Posts: 2500
Joined: Tue Aug 10, 2010 6:38 pm
Zip Code: 35111
Circle of Safety: Y

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.

:tractor: Follow my page "Alabama Tractor Pickers" on YouTube & Facebook! :tractor:

User avatar
John *.?-!.* cub owner
Team Cub Guide
Team Cub Guide
Posts: 23689
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

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.
If you are not part of the solution,
you are part of the problem!!!

User avatar
10+ Years
10+ Years
Posts: 7703
Joined: Thu Aug 19, 2004 2:31 pm
Zip Code: 10314
Location: NY Staten Island & Franklin

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. ... EL_UEL.htm ... d_423.html

"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

  • Similar Topics
    Last post

Return to “Farmall / IH / CASE”

Who is online

Users browsing this forum: No registered users and 0 guests