Also make sure that your choke linkage and butterfly are not stuck closed and that the throttle linkage and butterfly move smoothly and freely. Hey guys. Some say the power screw should be out 2 full turns. Are you sure that nothing is stuck under the needle valve seat? Did you take out the tube that sits in the venturi to make sure it was clear? the local tractor sales co has been helpful and from them it looks like we may have installed the wrong needle valve. 
Second you didn't say but are you shutting off the fuel when not inuse? If fuel is pouring out of the intake pipe than either the needle valve isn't closing or the casting has a crack in it Take the fitting off and make sure the screen hasn't come off and jammed the needle valve open. There may be something else going on, but try plugs before putting too much more time into it. : Since the gas tank sits above the engine, perhaps a worn needle valve. If nothing else, I am learning something. Have you tried blowing air in the passages to make sure they are free and clear? If air leaks around it than the mixture will be too lean. Thanks for your interest an we appreciate any help. what I found was a small leak in the fuel line that was apparently sucking air in with the fuel and made the tuning of the carb difficult. If you adjusted the float level properly than you must a) have something stuck under the needle seat that isn't allowing it to close, or b) you have a crack in the casting. They just won't start when all 4 are in there after flooding. 
Is that some sort of an overflow weep hole? "interactionType": "https://schema.org/CommentAction", thanks again. May be what was wrong before you rebuilt the thing. Neat tool too.
", I would say a tune up is in order , new plugs, points and cond . John Deere and its logos are the registered trademarks of the John Deere Corporation. I had a stuck linkage on my Cockshutt and once freed, the tractor fired right up. As I recall, one end is slightly larger in diameter than the other and sits down in the casting. { Fuel leaks (pours) from the air intake pipe. Choking had no effect, and there was some backfiring, which makes me think it was flooding. Regards, Steve Offiler soff@stealth.mc.ti.com, We have a Massey Furgeson TO20 or TE20 (can't ever remember) and it's verysimilar to the Ford 9N and probably the 8N. 8Ns didn't have fuel filters, except for the small screen in the tank. Hmm stuck float? I should let my friends on the antique tractor list answer this, but the carb on the 8N is simple to rebuild. }, thanks again. Copyright 1995-2022 eBay Inc. All Rights Reserved. Also doesn't appear to be any problem with restrictions in the fuel line-there is a new filter that was recently installed after the sediment bowl. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png",
Being that this price seems to be 1/2 to 1/3 of the price ofbrand named models, I am sceptical. JavaScript is disabled. I checked or had already checked everything described. I appreciate any advice, as I am not carburetor savy!! There may be something else going on, but try plugs before putting too much more time into it. "mainEntityOfPage": { "@id": "https://www.yesterdaystractors.com/" If not it may be setting there and flooding itself. {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}. This was a very reliable starting tractor prior to taking it apart. Inspection found float collapsed. It's possible the float level was set wrong, but I would sure try to adjust it first. About a year ago, on my Ford 8N, I drained the gas tank (by running the engine until it went dry), removed the hood and gas tank to get at the radiator and change axles.
Are the plugs not wet with fuel? "publisher": { : in the carburetor is causing the flooding, if this is indeed the : problem. Gas came out the air intake which is good but the spark plug electrodes are still dry. Too much fuel to the float chamber and none to the cylinders. The carb was cleaned and a new kit installed. Becasue it's a gravityfeed fuel system all the junk goes to the bottom and can cause intermittantquiting when some of the junk gets sucked in. Starting fluid has no effect. At least you'll know that gas is actually getting into the engine, albeit, causing it to flood! for creasing the pasture, You do not have permission to delete messages in this group, : clearing snow off the driveway, and general messin' around. Good luck- these old tractors can make a person insane.-Amy>> >, While pageing through a Mother Earth News mag the other day I sawa tractor imported from China advertized ad $4999.
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. Make sure it is put in the right way. It could be a sticking float. }, Thanks to you and the others for your interest and advise. Thanks to you and the others for your interest and advise. Sounds like two separate problems. Wayne, Another thought re: the venturi. From memory: the hp rating was stated as "25hp at 2000 rpm"(i think). "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", Obviously I am doing something wrong but I have Followed the manual carefully. Let us know how it turns out. Hp. If somebody treated the carb as badly as it sounds look for cracks in the casting where fuel could leak around the needle valve/seat. ", stephenscity: Mike, wanted to thank you for the reply, when I bought the tractor the fuel cut off had been bypassed, but the tractor ran very well, that is until the fuel began running out of the carb and knew then that there was trouble! at least the one installed does not match the picture they printed for me. I would say a tune up is in order , new plugs, points and cond . Thew float was set at .250 and has been cheched many times. The venturi must seat properly in the carb body. Obviously I am doing something wrong but I have Followed the manual carefully. New float checked and re=checked to ensure adjustment and clearance.all jets and passages carefully cleaned. "width": 200, I start to adjust mine with the power screw out 1 1/2 out and the idle screw 1turn out. It appears that even though the carb is full,fuel is not reaching the combustion chamber as the plugs remain dry. For a better experience, please enable JavaScript in your browser before proceeding. Thanks for your interest an we appreciate any help. You may need to replace the venturi. Then while it was idling for about 5 minutes, it started sputtering and died. Get on that baby and put it through some paces. Are you sure that nothing is stuck under the needle valve seat? New float checked and re=checked to ensure adjustment and clearance.all jets and passages carefully cleaned. }, New float checked and re=checked to ensure adjustment and clearance.all jets and passages carefully cleaned. When trying to restart, it wouldn't kick over at all. Spin it over with the choke fully closed; gas should drip out of the carb intake.If there is gas the next step is check for spark; take a plug wire off of a spark plug, hold the end close, 1/8 inch, to the plug top (or another place where there is bare metal)and with the key on spin it overthere should be a visible spark. A forum community dedicated to all tractor owners and enthusiasts. It is just forward of the plug at the bottom rear of the carb. Starting fluid has no effect. You have fuel to the float bowl but not to the cylinders as I understand it. Have you tried blowing air in the passages to make sure they are free and clear? } Also check the carburatorfor dirt. I cannot understand what caused the floats to collapse in the first place. Make sure it is put in the right way. Starting fluid has no effect. Care has been given to avoid vacuum leaks. "@type": "ImageObject", this is in ideal warm temperatures- I hate to think what it would be like to start it, if it were cold outside. Now are the plugs firing at the correct time? Intake has vacuum. Their engines are reliable, but notmuch in the fit-and-finish department.Same goes for the people at Chana Desil, come to think of it. First You need to take that filter off the fuel line. I need some advice on how to adjust the jets on my ford tractor's carburetor. After warming up for a few minutes, I moved it about 100 yards. The first, > Id want to know if parts were availableand service. "headline":"8n carb problems", runs great, many thanks to you both. Thanks to you and the others for your interest and advise. "text": "My friends 8n ran great until recently when it just stopped and gas began running through the carb. I can then put the old plugs back in one by one and burn whatever crud the gasoline is leaving behind off of them and they work fine. I can see the two adjustment screws on the carb and don't know if there is a third? "@context":"https://schema.org", You could be in store for a carb cleaning or a rebuild. The tractor itself isguarantted and there is guarantee of parts availability, but no mention ofservice. Symptoms today: started immediately with no choking. Spin it over with the choke fully closed; gas should drip out of the carb intake". I assume you did the carb overhaul correctly and you are not trying to burn something other than clean gasoline , Spray starter fluid in the carb intake, see what happens . Are the spark plugs clean / new / gapped properly? Make sure you have all the screens in the line. Thanks to all. "datePublished": "2003-08-18", The tractor wouldn't start. Starter fluid had no effect which would also be consistent with flooding. Any thoughts on why I am not getting gas to the line?
The carb was cleaned and a new kit installed. How about the linkage to the governor from the carb? Fuel leaks (pours) from the air intake pipe. There may be something else going on, but try plugs before putting too much more time into it. If it offers to run or even gives a 'chug' or two your carb is plugged or stuck somewhere. Sounds like you passed the spark testing procedure Glen. thanks again. They just won't start when all 4 are in there after flooding. Maybe you should subscribe to the "Antique Tractor" mailing list. Symptoms yesterday: it would kick once or twice, then the starter would disengage. "userInteractionCount": 7 "@type":"DiscussionForumPosting", After you get subscribed post your Ford 8N problem and you'll get allthe help you will need. If you adjusted the float level properly than you must a) have something stuck under the needle seat that isn't allowing it to close, or b) you have a crack in the casting. Crud in the tank, working its way into the carburetor, is not uncommon with older machinery. After letting sit for a few hours, it would kick once or twice, but not much else. this is my last hope before a new $$ carb. If air leaks around it than the mixture will be too lean. go to the distributorIf you have gas and spark check compression. Finally did the carb air intake test. How do you know that it doesnt seem to be getting fuel? "@type": "ImageObject", The flow circuit is from the tank, to the sediment bowl, to the tube, to the carb fitting, through the screen on the carb fitting, through the needle valve seat/valve into the float bowl. hey mike and john, just wanted to update you about my 52 ford tractor- I actually got it going thanks to the two of you. "@type": "Organization", Care has been given to avoid vacuum leaks. Make sure it is put in the right way. I can then put the old plugs back in one by one and burn whatever crud the gasoline is leaving behind off of them and they work fine. Hp.
I followed Bill's suggestions pretty much in order and none changed the outcome until I added more gas. I will remove the filter and buy a new line to install, with a new cut off valve. after fixing that leak it was easy to follow your instructions on the adjusting of the jets. I love these old tractors, but they're more lovable when they run! Could be junk in the carb. It appears that even though the carb is full,fuel is not reaching the combustion chamber as the plugs remain dry. Please use the navigational links to explore our website. this is my last hope before a new $$ carb. I'm going to call Central Tractor to see if I can get a manual, but any help in the meantime would be appreciated. The carburetor appears to have two adjustments, but I don't know which does what. I plan on working on the tractor myself, but if needed will a shoptake on a no-name tractor? For a better experience, please enable JavaScript in your browser before proceeding. Send an e-mail message to: antique-tra@ledger.co.forsyth.nc.us. Guarantees? When I loosen the nut at the carb end of the gas line, gas runs out. Seller assumes all responsibility for this listing. My guess - You need new plugs. this is my last hope before a new $$ carb. is rated. Did you by chance remove and replace the plug wires possibly mixing up the firing order? Good luck.
None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. No spark? "@type": "InteractionCounter", A defective front mount coil will also give you fits. Also make sure that your choke linkage and butterfly are not stuck closed and that the throttle linkage and butterfly move smoothly and freely. Is there gas going into the intake manifold? I noted too that gas was also leaking out of what I would not have guessed was an opening on the underside of the carb. Fuel leaks (pours) from the air intake pipe. Has anyone owned/used/seen these tractors? A defective front mount coil will also give you fits. is rated in so many different ways..how is it rated..can you see one in action?If it is that cheap it might pay to fly or drive to where you CAN see one dosome work. thanks again, I am learning as I go. I referred to the carb intake; I should of said the carb Air intake give it a good squirt. I appreciate all of the forum friends and your advice!!!! I did not install a new fuel line and turn off valve as of yet, but have them on order. Your new sediment bowl will come with the one for the tank but there is one where the line hooks up there and one at the carburetor end. You have fuel to the float bowl but not to the cylinders as I understand it. Wayne, I'm assuming you have a Marvel-Schebler carburetor.
Often these offers are motivated by another country's quest for U. S. cash.The main points to consider is the reliability of the dealer or place of purchase and the terms of the warrenty. That maybe how it got crushed; it was put in backwars and when the top and bottom castings were tightened down, it collapsed the venturi. Come join the discussion about farming, lawn maintenance, restoration, modifications, classifieds, troubleshooting, maintenance, and more! Is this not a sufficient test of gas flow? If fuel is pouring out of the intake pipe than either the needle valve isn't closing or the casting has a crack in it Take the fitting off and make sure the screen hasn't come off and jammed the needle valve open. Has anyone owned/used/seen these tractors?>(I would post this to the antique tractor list, but I KNOW they would laugh). So now not sure where to go next.
+--------------------------------+----------------------------------------+| Dick Parsons | ---- || NRA Life Member | | o ~ || Certified: IPA IRA ISA IHA | L_|->_______I_ || Harris Controls Division | _/ \_| | || Melbourne, Florida | [| o |------_--[] "I'd rather be || email: dpar@ccd.harris.com | \___/ (o) be farming!" My 8N has also been finicky even with a new tank, screens, bowls and lines etc. The only other possibility is that you didn't adjust the float level properly. (I would post this to the antique tractor list, but I KNOW they would laugh). I now have gas flowing abundantly. Seems there's not a nicer, more helpful bunch on the whole 'net - present company excluded ;-). I don't understand how the floats could be collapsed , nor do I understand how the venturi could be collapsed unless someone put the carb together without aligning the venturi properly, then screwed the top and bottom castings together, crushing the venturi. "name": "Wayne Louton" Shut off the fuel then remove the plug at the bottom of the carburetor. Kits are available from Ford-New Holland. }, Wayne, I presume that, when you say the carb is leaking fuel,(after you rebuilt it and replaced the defective float and the needle valve/seat and correctly adjusted float level) it is dripping out the intke pipe. "dateModified": "2003-08-18", I can then put the old plugs back in one by one and burn whatever crud the gasoline is leaving behind off of them and they work fine. Thew float was set at .250 and has been cheched many times. Id want to know if parts were availableand service. Too much fuel to the float chamber and none to the cylinders. I hired a mechanic to rebuild it and now it runs worse than before the rebuild. Some say the power screw should be out 2 full turns. Wayne, I presume that, when you say the carb is leaking fuel,(after you rebuilt it and replaced the defective float and the needle valve/seat and correctly adjusted float level) it is dripping out the intke pipe. Inspection finds no obvious problem. Very helpful.
Are the plugs not wet with fuel? Bill's diagram puts you on the right track. "height": 57 "height": 57
the local tractor sales co has been helpful and from them it looks like we may have installed the wrong needle valve. Thanks for sticking with me this far and for all your help. The only other possibility is that you didn't adjust the float level properly. My guess - You need new plugs. Is this a standard horse power measurement? New carb kit, float and adjustment the tractor ran badly a short while before it started leaking fuel like before. They just won't start when all 4 are in there after flooding. Box 336 Mountain Ranch CA 95246 209-754-1869. I would say a tune up is in order , new plugs, points and cond . Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-04SJ2KTSCK',{ cookie_flags: 'max-age=7200;secure;samesite=none' }); Welcome! For some reason once flooded I always need new plugs to get started. Several years ago Belrus made their small model available through other sources such as Northern Hydraulic. There may also be a fuel screen in the inlet elbow of the carburetor. Out on the idle screw leans the mixture and in enrichens it. Care has been given to avoid vacuum leaks. These are gravity fed filter messs up the fuel feed. If somebody treated the carb as badly as it sounds look for cracks in the casting where fuel could leak around the needle valve/seat. Wayne, Another thought re: the venturi. by the way that picture of the carb really helped !!!! As I recall, one end is slightly larger in diameter than the other and sits down in the casting. It was 25 hp and hasa 3pt hitch. Stuff came up and I didn't get back to installing the gas tank until now. "@type": "Person", That maybe how it got crushed; it was put in backwars and when the top and bottom castings were tightened down, it collapsed the venturi. "width": 200, I know that it is too rich- hard to start and just barely runs after starting- pouring out dark smoke-eventually it evens out but runs faster than it should on idle! Wayne, Another thought re: the venturi. I do have an 8N manual: Ford Shop Manual FO-4. That would probably be the offering from China Desil.While I've never seen one of them, I do own one of the engines upon which its (probably) based. we are bewildered--will try anything. If it is a float or needle valve problem there should be evidence of fuel leaking if you allowit to sit awhile, not running, with the fuel turned on. Being that this price seems to be 1/2 to 1/3 of the price of>brand named models, I am sceptical. That maybe how it got crushed; it was put in backwars and when the top and bottom castings were tightened down, it collapsed the venturi. I recently bought an old Ford 8N (circa 1952?) The brass venturi does not seem to fit tight as if it has been slightly collapsed. Not sure I understand the "Is there gas going into the intake manifold? I don't understand how the floats could be collapsed , nor do I understand how the venturi could be collapsed unless someone put the carb together without aligning the venturi properly, then screwed the top and bottom castings together, crushing the venturi. It appears that even though the carb is full,fuel is not reaching the combustion chamber as the plugs remain dry. View cart for details. -- Geoffrey Leach C/C++/X11/Motif/OpenLook Implementationge@netcom.com Mountain Ranch Software P.O. Thew float was set at .250 and has been cheched many times. the local tractor sales co has been helpful and from them it looks like we may have installed the wrong needle valve. I cannot understand what caused the floats to collapse in the first place. at least the one installed does not match the picture they printed for me. } Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation.
I start to adjust mine with the power screw out 1 1/2 out and the idle screw 1turn out. For some reason once flooded I always need new plugs to get started. My guess - You need new plugs. Give the carb float bowl a tap with a mallet or a hammer handle. be careful not to whack it hard enough to damage it. A defective front mount coil will also give you fits. As I recall, one end is slightly larger in diameter than the other and sits down in the casting. Pardon my ramblings!! wanted to let you both know that you made this ole man's day a lot better. It was 25 hp and has>a 3pt hitch. Heavy Equipment Air Intake & Fuel Delivery, Leave feedback about your eBay ViewItem experience, Zenith Carburetor Main Jet Adjusting Needle fit Ford 8N tractor B3NN-A 13876 B51, - Top Rated Plus - opens in a new window or tab, - eBay Money Back Guarantee - opens in a new window or tab, - for PayPal Credit, opens in a new window or tab, Learn more about earning points with eBay Mastercard, - eBay Return policy - opens in a new tab or window, - eBay Money Back Guarantee - opens in a new tab or window. Remove a. "interactionStatistic": { Did you take out the tube that sits in the venturi to make sure it was clear? Wayne, I'm assuming you have a Marvel-Schebler carburetor. Full Choke and cranking it without starting should at least soak your spark plugs with gas. The venturi must seat properly in the carb body. Unfortunately for me, I must have had another problem, either when I shut it down way back when or was created during the lengthy sit. A forum community dedicated to Antique & Classic Tractor owners and enthusiasts. Sounds like it might be the screen in the float bowl, or the screen that goes up into the bottom of the gas tank is clogged. thanks guys, I'll try to do everything as posted! Definitely follow the 2 pieces of earlier advice on cleaning screens, the fact you ran it dry probably dislodged dirt and clogged somewhere in your system. When was the last time you put a drop of oil in the oil cup on the side of the distributor to allow the spark advance to work? "logo": { }. JavaScript is disabled. Out on the idle screw leans the mixture and in enrichens it.
at least the one installed does not match the picture they printed for me. Sounds like two separate problems. I assume you did the carb overhaul correctly and you are not trying to burn something other than clean gasoline , Spray starter fluid in the carb intake, see what happens . You may need to replace the venturi. >> Mike Murphy> mvmu@attmail.att.com, Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message. We have had episodes like you describe and last spring my husband took the gas tank off and cleanedit out thoroughly and we've had no problems since. I checked or had already checked everything described. Perhaps if all else fails, can you check to see what kind of compression you're getting as deerhide suggested? The flow circuit is from the tank, to the sediment bowl, to the tube, to the carb fitting, through the screen on the carb fitting, through the needle valve seat/valve into the float bowl. I appreciate your guidance and experience- it did make a difference! Thanks for all responses, Michael Murphy mvmu@attmail.at.com, > Speaking of tractors>>> While pageing through a Mother Earth News mag the other day I saw>a tractor imported from China advertized ad $4999. All clean, new needle valve set, floats and adjustment are correct. ste@kendaco.telebyte.com "Don't hate nuthin at allste@four.net 'cept hatred"sim@linknet.kitsap.lib.wa.us, All good points. After removing the gas line at the bowl, I can see that no gas is flowing to the carburetor. The spark plug test seems to be as you explained in greater detail in the above post.
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