This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
Carburetor leaking
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.
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.
-
- 10+ Years
- Posts: 20
- Joined: Mon Dec 04, 2006 8:38 pm
- Zip Code: 12701
- Tractors Owned: 1948 FCUB
2005 NH TC45DA
Carburetor leaking
Hello,
Went to start my 1948 Cub this weekend and gas is pouring out of the bottom of the carb. Could this be the needle valve not seating? See picture, should I rebuild or just buy a new carb.
Thanks,
Steve
-
- Team Cub
- Posts: 11859
- Joined: Tue May 25, 2004 8:02 pm
- Zip Code: 80501
- Tractors Owned: Cubs, MH Pony, Shaw, Allis G, 1934 Silver King, JD LA and LI, Gibson D, David Bradley Tri-Trac
- Circle of Safety: Y
- Location: CO, Longmont
Re: Carburetor leaking
No need for a new carb. Was the sediment bowl valve closed? If so, open it up, be careful to pull the two halves straight apart so you don't break the thin idle tube. Remove the float. You can immerse it in hot water and watch for a bubble stream, which indicates it's leaking. Otherwise, remove the float pivot pin, float, and needle. Check for debris or corrosion in the needle cage/seat. You may need a new body gasket for when you put it back together. TM Tractor or McDonald Carb has them.
"We don't need to think more,
we need to think differently."
-Albert Einstein
we need to think differently."
-Albert Einstein
-
- 10+ Years
- Posts: 20
- Joined: Mon Dec 04, 2006 8:38 pm
- Zip Code: 12701
- Tractors Owned: 1948 FCUB
2005 NH TC45DA
Re: Carburetor leaking
Thanks Bill, I will take off the carb and rebuild it. The fuel sediment bowl valve was open when the carb was leaking. I have closed it and will remove the carb.
Thanks,
Steve
Thanks,
Steve
- Glen
- 10+ Years
- Posts: 6146
- Joined: Mon Mar 19, 2012 7:33 pm
- Zip Code: 00000
- Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
- Circle of Safety: Y
- Location: Wa.
Re: Carburetor leaking
Hi,
Below are pages from the Cub parts manual of the IH carburetor, if you need them.
http://www.farmallcub.info/manuals/cub_ ... 012-12.jpg
http://www.farmallcub.info/manuals/cub_ ... 012-13.jpg
Below are pages from the Cub parts manual of the IH carburetor, if you need them.
http://www.farmallcub.info/manuals/cub_ ... 012-12.jpg
http://www.farmallcub.info/manuals/cub_ ... 012-13.jpg
-
- 10+ Years
- Posts: 20
- Joined: Mon Dec 04, 2006 8:38 pm
- Zip Code: 12701
- Tractors Owned: 1948 FCUB
2005 NH TC45DA
Re: Carburetor leaking
Glen thank you!
- Glen
- 10+ Years
- Posts: 6146
- Joined: Mon Mar 19, 2012 7:33 pm
- Zip Code: 00000
- Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
- Circle of Safety: Y
- Location: Wa.
Re: Carburetor leaking
Hi,
The float level and the float drop should be set exactly when you have the carburetor apart.
Some of the guys on here have said it was important to set it right, their carbs didn't work right until they set the float right. Maybe you knew already.
Below is a page from the Cub service manual showing the float level and float drop. The IH carb is in the upper pics.
http://www.farmallcub.info/manuals/gss- ... 002-09.jpg
There is a screen in the gas inlet to the carb, by the threads, it should be cleaned too.
The float level and the float drop should be set exactly when you have the carburetor apart.
Some of the guys on here have said it was important to set it right, their carbs didn't work right until they set the float right. Maybe you knew already.
Below is a page from the Cub service manual showing the float level and float drop. The IH carb is in the upper pics.
http://www.farmallcub.info/manuals/gss- ... 002-09.jpg
There is a screen in the gas inlet to the carb, by the threads, it should be cleaned too.
Who is online
Users browsing this forum: Dale Finch and 55 guests