Super a won't start

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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.
Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Super a won't start

Postby Jengland923 » Sun Mar 30, 2014 8:17 pm

We have got a super a will not start. Seems to not be getting gas. It is firing replace plugs and coil. It was heating up. Has new zenith carb last year. Cleaned this year after wouldn't start. Worked all day yesterday. Will run all day on ether. By the way I am new here. Thanks for all the help

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Mon Mar 31, 2014 11:26 am

When I took the carb apart the gasket tore a little bit on the air side between the air hole and the Venturi. I had to put it back together like that. Would that keep it from at least hitting?

Eugene
Team Cub Mentor
Team Cub Mentor
501 Club
501 Club
Posts: 15050
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Super a won't start

Postby Eugene » Mon Mar 31, 2014 11:43 am

Jengland923 wrote:Will run all day on ether.
Thinking you will need to clean the entire fuel system including the carburetor.

Jengland923 wrote:When I took the carb apart the gasket tore a little bit on the air side between the air hole and the Venturi. Would that keep it from at least hitting?
Possible. Suggest that after you get the fuel system cleaned, you install a new carburetor kit - at least the gaskets included in the kit.
I have an excuse. CRS.

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Mon Mar 31, 2014 12:11 pm

Picked up gasket today going to install tonight. There is plenty of vacuum at inlet of carb just doesn't seem to be getting gas mixed with air. I have tried all sorts of different things. I work on trucks for a living but this simple little tractor about to kick my butt. Lol

Eugene
Team Cub Mentor
Team Cub Mentor
501 Club
501 Club
Posts: 15050
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Super a won't start

Postby Eugene » Mon Mar 31, 2014 12:36 pm

Remove the carburetor main jet or plug on the bottom of the fuel flow. Check for fuel flow through the carburetor.

Typically the carburetor main jet gets plugged up. Remove the main jet and blow it out.

If that doesn't work, dip the carburetor, then blow out all passages.
I have an excuse. CRS.

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Mon Mar 31, 2014 2:07 pm

Which jet is main jet. I am not very farmiliar with carbs. I cleaned the 2 jets inside and I guess main jet tha has hex head?

Eugene
Team Cub Mentor
Team Cub Mentor
501 Club
501 Club
Posts: 15050
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Super a won't start

Postby Eugene » Mon Mar 31, 2014 3:45 pm

Need to identify the carburetor. There are at least 3 makes of carburetors and quite a number of models that could be installed on the tractor. Once carburetor is identified, locate a pictorial lay out of the carburetor. The pictorial will disclose the location of the jets, and various galleries.

The main jet is most likely located in front of the main jet adjusting screw and can be removed with a screwdriver.
I have an excuse. CRS.

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Mon Mar 31, 2014 4:03 pm

Ok found a layout and shows main jet. I have cleaned it. Fixing to go replace gasket and try some other stuff. Hope we get it going thanks for the help

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Mon Mar 31, 2014 8:15 pm

Found the main jet in bottom of bowl was stopped up. I feel like an idiot. I guess that's why I work on diesels lol. I got it running and now the governer is hunting. At idle it will run fine. You can pull choke out to right before it gets rich enough to smoke and it will run at higher throttle. It done same thing with previous carb last year but after replacing carb last year it seemed to run ok no hunting. Which we dist operate it but a few hours in garden.

User avatar
twotone
5+ Years
5+ Years
501 Club
501 Club
Posts: 1116
Joined: Sat May 14, 2011 6:09 pm
Zip Code: 15132
Tractors Owned: 53 F Cub
73 F Cub
53 Super A With Snow/Grader Blade
193 Plow With Colter And Jointer
144 Cultivators
22 Mower
Circle of Safety: Y
Location: Versailles,Pa.

Re: Super a won't start

Postby twotone » Tue Apr 01, 2014 1:44 am

My SA was hunting after a carb rebuild and there is an adjusting bolt on the governor that I played with for a little while and now it works fine.
Know Your Cub, And Your Cub Will Know You.

Tom

User avatar
havoc1482
501 Club
501 Club
Posts: 972
Joined: Fri Sep 20, 2013 11:17 am
Zip Code: 01034
eBay ID: havoc1482
Tractors Owned: _______ 1948 Farmall Super A
Circle of Safety: Y
Twitter ID: @havoc1482
Location: Granville, MA

Re: Super a won't start

Postby havoc1482 » Tue Apr 01, 2014 2:15 am

twotone wrote:My SA was hunting after a carb rebuild and there is an adjusting bolt on the governor that I played with for a little while and now it works fine.



Same for me. Its a screw under the acorn nut below the governor. its tricky to get at because its below the governor behind the radiator.
Mike
Image

I bleed Black & Gold

IH Collectors Club New England (Chapter 18)

Western Mass. (The 413)

User avatar
havoc1482
501 Club
501 Club
Posts: 972
Joined: Fri Sep 20, 2013 11:17 am
Zip Code: 01034
eBay ID: havoc1482
Tractors Owned: _______ 1948 Farmall Super A
Circle of Safety: Y
Twitter ID: @havoc1482
Location: Granville, MA

Re: Super a won't start

Postby havoc1482 » Tue Apr 01, 2014 2:15 am

twotone wrote:My SA was hunting after a carb rebuild and there is an adjusting bolt on the governor that I played with for a little while and now it works fine.



Same for me. Its a screw under the acorn nut below the governor. its tricky to get at because its below the governor behind the radiator.
Mike
Image

I bleed Black & Gold

IH Collectors Club New England (Chapter 18)

Western Mass. (The 413)

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Tue Apr 01, 2014 5:07 am

Could somebody post a exploded view of governer and show me what I am adjusting. I have ordered service manual be here friday. Thank you all for your help

User avatar
havoc1482
501 Club
501 Club
Posts: 972
Joined: Fri Sep 20, 2013 11:17 am
Zip Code: 01034
eBay ID: havoc1482
Tractors Owned: _______ 1948 Farmall Super A
Circle of Safety: Y
Twitter ID: @havoc1482
Location: Granville, MA

Re: Super a won't start

Postby havoc1482 » Tue Apr 01, 2014 6:54 am

Here you go:

The part you're looking to adjust is the screw (21) which you get to by taking the acorn nut (22) off. Adjust in it, but not too far. Do not play with it while the tractor is running. Screw it in a little, start the tractor, if the problem is fixed don't touch it anymore. If it isn't fixed, turn the tractor off and repeat.

Image
Mike
Image

I bleed Black & Gold

IH Collectors Club New England (Chapter 18)

Western Mass. (The 413)

Jengland923
Posts: 12
Joined: Sun Mar 30, 2014 8:11 pm
Zip Code: 37779

Re: Super a won't start

Postby Jengland923 » Tue Apr 01, 2014 7:17 am

Thanks. I will give this a try. Is it possible it could still be in the carb? I didn't mess with float or anything when I cleaned all of if last night


Return to “Farmall A, Super A, AV, 100, 130 & 140”

Who is online

Users browsing this forum: No registered users and 0 guests