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Ground hog
Posts: 6
Joined: Tue Dec 22, 2015 5:18 am
Zip Code: 02885
Tractors Owned: 1956 cub
Location: RI Warren

carb

Postby Ground hog » Wed Feb 03, 2016 3:12 pm

I just recently purchased a 1956 cub and changed al the fluids and gave her a full tune up . Heres the problem I could not get her to start. I have spark and fresh high test fuel. I had the Zenith carb rebuilt and it still wouldn't start. So heres what I did to get her running I filled a squirt bottle up with gas sprayed a couple blasts inside the carb and she started right up. I put my hand over the carb and it has plenty of suction. After letting it run for 10 min I turned her off and tried starting her up again and she wouldn't start unless I would spray the carb with a couple of squirts again.` So the problem is the carb is not allowing gas to get into the intake. I did unscrew the the bolt on the bottom of the carb and it is flowing gas. I had failed to mention that I have the hood off and have a fuel tank hanging above the tractor with a short piece of fuel line.

Eugene
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Re: carb

Postby Eugene » Wed Feb 03, 2016 4:50 pm

Ground hog wrote:So the problem is the carb is not allowing gas to get into the intake.
Perhaps since the tractor ran for 10 minutes, could be related to other problems.

Compression tests, dry then wet, results were.

Double check ignition timing with timing light.

Manifold gasket leaking.
I have an excuse. CRS.

ScottyD'sdad
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Re: carb

Postby ScottyD'sdad » Wed Feb 03, 2016 5:23 pm

I went to look at this cub with him, before he bought it. Sat a while, at least a year. We didn't have fuel with us, but it started on carb cleaner, with a battery pack. Ran well, spraying carb cleaner in the intake of the carb, so I don't suspect a compression problem. I suspect the carb.Plenty of vacuum, at the carb air intake.
Ed
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Eugene
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Re: carb

Postby Eugene » Wed Feb 03, 2016 6:46 pm

Check the ignition timing, compression, and for vacuum leaks at the manifold and carburetor to manifold before you come back to the carburetor.

Ed says it's the carburetor, it's probably the rebuilt the carburetor.

I would put the carburetor on the bench, disassemble, inspect, and then dip it.

Thinking blockage in the idle tube circuit.

Check to see if the bowl to top gasket has been placed upside down and all parts there and installed correctly.
I have an excuse. CRS.

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Glen
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Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
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Location: Wa.

Re: carb

Postby Glen » Wed Feb 03, 2016 7:03 pm

Hi,
Welcome to the website Ground hog. Pardon me for asking a perhaps silly question, but nobody said if you are using the choke, doesn't the engine get any fuel with the choke fully on, if not, then it sound like the carburetor needs disassembling, like Eugene said. :)

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Don McCombs
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Re: carb

Postby Don McCombs » Wed Feb 03, 2016 7:10 pm

Ground hog wrote:... I filled a squirt bottle up with gas sprayed a couple blasts inside the carb and she started right up. I put my hand over the carb and it has plenty of suction. After letting it run for 10 min I turned her off ...

Doesn't sound to me like we have a carburetor problem here. I would check for a vacuum leak at the gasket between the carb and manifold, check the integrity of the manifold and check for proper valve functioning. What all was done for the "full tuneup"?
Don McCombs
MD, Deep Creek Lake

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Ground hog
Posts: 6
Joined: Tue Dec 22, 2015 5:18 am
Zip Code: 02885
Tractors Owned: 1956 cub
Location: RI Warren

Re: carb

Postby Ground hog » Thu Feb 04, 2016 4:24 am

Dear Club members
Thank you for the quick responses and they are all great suggestion. I did check for a vacuum leak at the carb/manifold when it was running with a can of starting fluid around the seam but it didn't idle up any,so that eliminates that. Full tune up included plugs, wires, points, condenser, cap, rotor, 6 volt coil and 6 volt battery. The only thing I haven't tried yet would be a comp. test and timing. I would like to ad a special thanks to Ed for helping me out in purchasing the tractor and ALL the questions.

Ground hog
Posts: 6
Joined: Tue Dec 22, 2015 5:18 am
Zip Code: 02885
Tractors Owned: 1956 cub
Location: RI Warren

Re: carb

Postby Ground hog » Thu Feb 04, 2016 4:42 am

To Glen
I did try using the choke when starting it. I had a experienced mechanic rebuild the carb for me . He mentioned that he has owned several cubs in the past and has rebuilt several carbs with great results. So I couldn't not trust him.
When I recover from surgery I WILL get back on her.

ScottyD'sdad
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Tractors Owned: 6"F" cubs
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1 154
1 184
1 IH444
1 Oliver OC3 crawler
1 AC D10
1 IH 100 manure spreader
1 IH model B corn grinder
3 power units
cub demonstrator
Circle of Safety: Y
Location: Ma. Rehoboth

Re: carb

Postby ScottyD'sdad » Thu Feb 04, 2016 8:32 am

When you get back on your feet, we'll try putting a known good IH carb on her, and see if it starts. That will prove or disprove the carb question. Or, put your carb on one of my cubs.
Ed
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Ground hog
Posts: 6
Joined: Tue Dec 22, 2015 5:18 am
Zip Code: 02885
Tractors Owned: 1956 cub
Location: RI Warren

Re: carb

Postby Ground hog » Thu Feb 04, 2016 11:39 am

Thanks again Ed. I owe one or two or three..............

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Stanton
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Re: carb

Postby Stanton » Fri Feb 05, 2016 7:44 am

First of all, welcome to the forum!

Secondly, don't get discouraged or intimidated. If your Cub ran once, with help from the forum members, it can run again. I'd echo what others suggested above.

While recuperating, please familiarize yourself with the resources at your fingertips:
--Welcome Wagon: http://www.farmallcub.com/phpBB2/viewtopic.php?f=20&t=88707
--Manuals: links located across the top of each screen (PDF Manuals and Rudi's Manuals)
--How To Forum: http://www.farmallcub.com/phpBB2/viewforum.php?f=11
--You might pay particular attention to this How To: http://www.farmallcub.com/phpBB2/viewtopic.php?f=145&t=16305 (it has some suggestions one may not think of doing, but are essential for a running Cub)

Hope all this helps. Again, don't be discouraged! We're glad you're here!
Stanton
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Ground hog
Posts: 6
Joined: Tue Dec 22, 2015 5:18 am
Zip Code: 02885
Tractors Owned: 1956 cub
Location: RI Warren

Re: carb

Postby Ground hog » Sat Mar 05, 2016 6:29 am

Well I did it I bit the bullet and bought another carb @ the sum of $233.00 . As soon as that baby came in, I installed it and presto my BABY ran like a swiss watch. Thank you for all your suggestions . Now I have to stop the touch control from leaking and then and only then its time for the old tear down and start painting. Thanks again guys.

Ground hog
Posts: 6
Joined: Tue Dec 22, 2015 5:18 am
Zip Code: 02885
Tractors Owned: 1956 cub
Location: RI Warren

Re: carb

Postby Ground hog » Sat Mar 05, 2016 6:31 am

PS I have no Idea how you guys have more than one of these things.

ScottyD'sdad
Cub Pro
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Posts: 6504
Joined: Thu Aug 31, 2006 7:00 pm
Zip Code: 02769
Tractors Owned: 6"F" cubs
5 lo-boys
1 154
1 184
1 IH444
1 Oliver OC3 crawler
1 AC D10
1 IH 100 manure spreader
1 IH model B corn grinder
3 power units
cub demonstrator
Circle of Safety: Y
Location: Ma. Rehoboth

Re: carb

Postby ScottyD'sdad » Sat Mar 05, 2016 7:59 am

Ground hog wrote:PS I have no Idea how you guys have more than one of these things.

Now you understand why i'm a little strange!
Ed
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