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Farmall H carburator

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Skip

01-20-2006 12:41:34

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Have a 1947 Farmall H that as far as I know is original. Have been having trouble with the carb ever since, in my ignorance, contaminated the gas tank with gunk. Gunk = water, rust, etc.

Question is, do any of ya'll out there with infintely more experience than I with old tractors have a suggestion about how to once and for all eliminate the problem with the float needle sticking.

I've had the carb apart several times and have cleaned it meticulously but after a while even with the separator still in the system I have the same problem again.

Any help would certainly be appreciated!

Thank You,
Skip

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Skip

01-21-2006 07:06:19

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

Thanks to everyone for your posts. There were some very good ideas from ya'll that I'd never thought of. That's why I posted the question.

Thanks again,
Skip

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Oldawg

01-20-2006 23:39:12

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

You might try a different needle and seat. The only ones I have seen stick closed are the neoprene-tipped ones. A sharp bump can cause the needle to ram into the seat and stick. As captaink said, the best way to prevent that is use an all steel needle or have the little clip on the needle that hooks over the float arm and pulls the needle open when the float drops. If your needle has a groove for the clip, I could probably find a clip for you if you email me.

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Brownie 45

01-20-2006 15:01:27

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

Sounds like you might have gum & sludge from old fuel causing problems. I had problems with a 1917 Dodge gas tank [ varnish , gum, slop] which caused lots of trouble. I removed the tank and purchased two 1- gallon cans of denatured alcohol , & varnish remover which were dumped into the tank. After two days, I emptied the tank into a bucket. What came out of the tank looked & smelled nasty, but the tank was clean. The drainings made short work of starting the next brush pile on fire. All of this work should be done outdoors of course.

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Dave NE IA

01-20-2006 14:46:45

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

I used to be sold on duck taping the tank to a tractor rear wheel and throwing BB s in a going for a drive. Till Last summer I purchased 6 gallons of white vinagar at the grocery store, dumped it in and left it a week. I have done this to probably ten tanks since and so far had perfect results. It actualy lookes like it was sandblasted on the inside. Vinagar has a little acid, is reusable so far ten times / ten tanks , approx $2.50 a gallon. Running a good running tractor---PRICELESS. I had a B that we installed paper throw away filters, we used the real big ones, but could not get a mile and had to blow it out or replace. Now it is just plain fun to drive around and enjoy the little toy. Dave NE IA

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Fluggie in Ia

01-20-2006 14:40:36

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

I would pull the tank off, boil it out and put in liquid liner. My friend and I have done this with many old tractors and had no trouble at all. follow the instructions to the letter tho to make sure it cures out proper.

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01-20-2006 14:31:28

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

For about $50.00 you can take off tank, take it a radiator shop, have them acid dip the tank, then have them coat it. Problem solved. I never do anything on anything like without cleaning and coating the tank, it costs a little up front, but saves 100's on head aches.

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North M

01-20-2006 13:55:08

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

I was having the same trouble with a farmall H I finally did some pipefitting together to form a trap for sediments and solids. I put a 1/4 inch nipple at the bottom of the tank, screwed on a tee, and then added another nipple, 90, nipple and 1/4 " ball valve on the end. This allows me to quickly flush the system out and provides a way to trap solids or contaminents. off the tee I added on the sediment bowl and connected it to an inline filter and then on to the carb. I had steamed out the gas tank but it still had some problems. This saved me a lot of trouble with the old H. Good Luck

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BillyinStoughton

01-20-2006 13:26:36

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

Skip...

The best way to eliminate the problem is to replace the tank with one that has no contaminates present in it to get between the needle and seat in your carburator.

If that"s not feasible and you desire to keep your existing tank, remove it and have it cleaned either at the local engine shop or radiator shop. They will be able to boil out your existing tank for reuse. I"ve had this done once with great results.

Good luck with it!

Billy

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Allan in NE

01-20-2006 13:09:22

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Re: Farmall H carburator in reply to Skip, 01-20-2006 12:41:34

Skip,

It'll drive ya crazy 'cause a lot of little stuff still gets thru that screen at the sediment bowl.

I bought a bunch of these paper filters and put one just ahead of the carb. When it plugs, I put another on and clean the glass sediment bowl again too.

Hopefully, one of these days, I'll outrun all the crud.

Allan

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the tractor vet

01-20-2006 16:05:36

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Re: Farmall H carburator in reply to Allan in NE, 01-20-2006 13:09:22

Allen now i am not tryen to be a smart a$$ here but that is one thing that i will never do on a tractor is use rubber fuel line and a plastic fuel filter as i have seen three tractors burn up because it got caught on something and pulled the line off or off the filter barb or if a small fire does start that plastic fuel filter will melt and you have a Barba QUE if i have to replace a fuel line i use steel tubing and if i have to add a inline filter i use the metal ones that have the threaded fittings less chance of something stupid happening and if a small fire should start ya got a better chance of getting it out when there is no fuel or gas helping .

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Skip

01-20-2006 13:23:16

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Re: Farmall H carburator in reply to Allan in NE, 01-20-2006 13:09:22

Thanks Allan in NE.

I was wondering if moisture could be a problem causing the float needle to stick closed?

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captaink

01-20-2006 13:50:18

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Re: Farmall H carburator in reply to Skip, 01-20-2006 13:23:16

That almost sounds like the float might be bent and hanging up in the carburetor, or do you know that the float is dropping and the needle is actually sticking? Some needles on some carburetors (not necessarily on the H) have a little wire clip that goes over the float to pull the needle open. Just a couple suggestions�

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