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Discussion Forum
Show Parts for Model:

%$#@ viton-tipped needle won't stop leaking

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mkirsch

09-04-2012 05:37:57
64.80.110.74



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I can't get the needle to stop leaking on my Super A.

It's a new needle and seat, along with a new float (old one was smashed and leaking).

Take the carb apart, clean it out, reset the float, check the float/needle action, put it back together, and the next morning: drip-drip-drip.
Take the carb apart, clean it out, reset the float (it hasn't changed, still correct 1-5/32"), check the float/needle action (still pushes the needle all the way up), put it back together, and the next morning: drip-drip-drip.
Take the carb apart (again), clean it out (clean as a whistle from before), reset the float (STILL hasn't changed), check the needle action (no difference from before), put it back together, and the next morning: drip-drip-drip...

What is the secret to making these %$#@ things work? It's all I can get. The kit was an A&I off Ebay. CaseIH dealer gave me the EXACT SAME KIT, only twice the price.

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achodges1

09-04-2012 20:41:14
66.139.197.207



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
I have more trouble with the seat gasket leaking not the needle.The machine work on the carb side isn't great and sometimes time and water takes a toll. I use a little permetex on the carb body( let it dry good).Seems to work for me.



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GordoSD

09-04-2012 18:38:11
64.33.250.162



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 Another option in reply to mkirsch, 09-04-2012 05:37:57  
If you want to try another route. I have a professionally built, restored , show condition carb, 90 day warantee, carb in a box looking for a home. And you can sell Old that core for 150 dollars. Or I will give you $40 dollars for it on this one.
Email is open.



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Janicholson

09-04-2012 18:26:08
96.24.99.126



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
Were it mine I would shut off the fuel, then remove the bowl, then use a bit of duct tape to hold the float in the just at setting height (after drying the float and carb body some). Then with a good non sparking light I would turn on the fuel and watch for leaks to start. Knowledge is priceless, supposition is baseless. Jim



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FBH44

09-04-2012 13:25:58
64.85.220.93



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
I have trouble with the float dragging against the side of the chamber. Not much room in there, and a slight touch along the side means a high fuel level, possible flooding. Ihave to be careful setting my floats, in the exact center of the chamber.



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pete 23

09-04-2012 10:42:02
74.32.238.2



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
Can you see inside the air cleaner inlet of that particular carburetor and get a look at the tip of the nozzle. If it is coming out of the nozzle it is indeed caused from fuel level too high and most likely cause is the needle and seat. But, they can leak around the gasket on the seat and cause this also. I have got to the point that I use loctite teflon sealer on all those to overcome that leak from rough castings. I find most needles that leak are due to the hole in seat not being true. Some you can see with the naked eye that they are oblong or have a poor seat. I use a suitable tool to stake that seat. Nozzle pintle from like a 414 works great. I never tap on the viton tipped needle because they just turn in there anyway in use.

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Bill in IL

09-04-2012 10:33:23
132.3.49.68



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
I have had trouble with a bent float dragging inside the float bowl.

Also did you put a gasket on between the carb body and the needle seat? Did that once and it leaked around the threads of the seat.



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mkirsch

09-04-2012 12:27:11
64.80.110.74



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to Bill in IL, 09-04-2012 10:33:23  
Quoting Removed, click Modern View to see

So... Gasket, or no gasket?

There was a gasket on the old seat, and I used the new gasket that came with the kit.

I have no idea how to tell if the float is dragging.



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old

09-04-2012 13:00:51
209.86.226.56



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 12:27:11  
You need the gasket on the seat an the seat has to be tight so as not to leak. As for the float moving the way I do it is this. Take the turn the carb right side up and then upside down a few times. Listen for the float to move and if it moves freely you can in fact hear it move



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jt

09-04-2012 08:56:25
166.137.88.22



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
As others have stated, probably not needle and seat. When you had carb off, did you pressure test needle? You can do that by blowing in fuel inlet and see if thatis the actual culprit. Sounds like u have, as stated, a cracked body or plugged vent. I use A&I carb parts and have no trouble.



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old

09-04-2012 08:52:54
209.86.226.40



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
Common with the rubber tip needles. 2 ways yo fix them. #1 time will do so and will put a set in the tip so it seals or you can do this. Open it up. Drop the needle in the seat then tap on it a few times with a small punch etc. Do not whale the crap out of it just a few light taps. Pull it back out and you should be able to see a ring on the tip, that is a set. Learned that from and old carb guy years ago but has is long since 6 foot under

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randy hall

09-04-2012 07:36:59
216.255.38.11



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
i buy my carburetor kits from napa. the chinese needle and seat from tisco or a+i always leak for me too. the napa ones don't. case nh is getting very good at buying junk replacement parts and charging oem prices.



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rustyfarmall

09-04-2012 07:21:28
67.55.162.174



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
Quoting Removed, click Modern View to see

It ain't the needle and seat. That carburetor is cracked somewhere.



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Hendrik

09-04-2012 06:49:29
194.53.253.51



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
From an older thread on this very same subject I remember that the leak may be between the seat and the carburetor body, while the leak APPEARS to be a seat/needle problem. Cannot speak from experience.
HTH, Hendrik



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Lionel Ackerman

09-04-2012 06:45:58
50.103.133.239



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
Check the air vent hole going into the float area.All carbs have one.Will leak if hole is plugged.



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wayne in mn

09-04-2012 05:48:49
66.188.166.241



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 Re: %$#@ viton-tipped needle won't stop leaking in reply to mkirsch, 09-04-2012 05:37:57  
Try sanding the edges of the needle so it doesn't hang up on the side of the seat.
Is the float rubbing the side of the float bowl?



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