I checked or had already checked everything described.
Starting fluid has no effect.
thanks again.
} 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.
New carb kit, float and adjustment the tractor ran badly a short while before it started leaking fuel like before. When trying to restart, it wouldn't kick over at all. Are the spark plugs clean / new / gapped properly? A defective front mount coil will also give you fits.
Will not start and appears to not be getting any fuel.
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.
I would say a tune up is in order , new plugs, points and cond . Hp. 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 . I do have an 8N manual: Ford Shop Manual FO-4. 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. A forum community dedicated to all tractor owners and enthusiasts. For a better experience, please enable JavaScript in your browser before proceeding.
They just won't start when all 4 are in there after flooding. "width": 200,
"@type": "Organization", My guess - You need new plugs.
Wayne, Another thought re: the venturi. Turn the fuel back on and look for fuel to drain out in a catch container. I'm going to call Central Tractor to see if I can get a manual, but any help in the meantime would be appreciated.
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.
Thew float was set at .250 and has been cheched many times. 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. thanks guys, I'll try to do everything as posted! New float checked and re=checked to ensure adjustment and clearance.all jets and passages carefully cleaned. There may also be a fuel screen in the inlet elbow of the carburetor. Some say the power screw should be out 2 full turns. As I recall, one end is slightly larger in diameter than the other and sits down in the casting.
Symptoms yesterday: it would kick once or twice, then the starter would disengage.
Some say the power screw should be out 2 full turns. I plan on working on the tractor myself, but if needed will a shoptake on a no-name tractor?
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.
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. +--------------------------------+----------------------------------------+| 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!"
"@context":"https://schema.org", Thanks for your interest an we appreciate any help.
by the way that picture of the carb really helped !!!! Wayne, I'm assuming you have a Marvel-Schebler carburetor.
Thanks to you and the others for your interest and advise.
I have found that keeping my tank very full with gas has alleviated many of my starting problems; but that is only after you are ensured of unimpeded gas flow to the bowl and then to the carb.
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 . It's possible the float level was set wrong, but I would sure try to adjust it first. The brass venturi does not seem to fit tight as if it has been slightly collapsed. You may need to replace the venturi. I would say a tune up is in order , new plugs, points and cond . 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 . Id want to know if parts were availableand service.
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. Could be junk in the carb.
They just won't start when all 4 are in there after flooding. Second you didn't say but are you shutting off the fuel when not inuse?
"width": 200, "dateModified": "2003-08-18", I checked or had already checked everything described. Thanks to you and the others for your interest and advise. Pardon my ramblings!!
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.
The brass venturi does not seem to fit tight as if it has been slightly collapsed. Symptoms today: started immediately with no choking. Thanks to you and the others for your interest and advise.
The carb was cleaned and a new kit installed.
}
The carb was cleaned and a new kit installed.
Box 336 Mountain Ranch CA 95246 209-754-1869. I start to adjust mine with the power screw out 1 1/2 out and the idle screw 1turn out. Make sure it is put in the right way. 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. Make sure it is put in the right way.
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. There may be something else going on, but try plugs before putting too much more time into it.
Kits are available from Ford-New Holland. After letting sit for a few hours, it would kick once or twice, but not much else.
Fuel leaks (pours) from the air intake pipe. "@type": "ImageObject", ", I referred to the carb intake; I should of said the carb Air intake give it a good squirt.
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. You could be in store for a carb cleaning or a rebuild. wanted to let you both know that you made this ole man's day a lot better. Did you take out the tube that sits in the venturi to make sure it was clear?
Care has been given to avoid vacuum leaks.
The carb was cleaned and a new kit installed.
The brass venturi does not seem to fit tight as if it has been slightly collapsed. Anyway, my 2 cents on your problem: it is possible that your carburetor and fuel system need to be cleaned out. I can see the two adjustment screws on the carb and don't know if there is a third? I recently bought an old Ford 8N (circa 1952?) Is this a standard horse power measurement?
}, Hey guys.
Please use the navigational links to explore our website. Is there gas going into the intake manifold?
It was 25 hp and has>a 3pt hitch. I followed Bill's suggestions pretty much in order and none changed the outcome until I added more gas. For some reason once flooded I always need new plugs to get started. 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.
thanks again. 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. 
"logo": {
At least you'll know that gas is actually getting into the engine, albeit, causing it to flood!
They just won't start when all 4 are in there after flooding. 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.
John Deere and its logos are the registered trademarks of the John Deere Corporation.
For a better experience, please enable JavaScript in your browser before proceeding. Wayne, Another thought re: the venturi. It could be a sticking float.
"datePublished": "2003-08-18", I cannot understand what caused the floats to collapse in the first place. Remove a. Send an e-mail message to: antique-tra@ledger.co.forsyth.nc.us.
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?
I appreciate all of the forum friends and your advice!!!!
Full Choke and cranking it without starting should at least soak your spark plugs with gas. It is just forward of the plug at the bottom rear of the carb.
Stuff came up and I didn't get back to installing the gas tank until now. For some reason once flooded I always need new plugs to get started. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them.
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. Also make sure that your choke linkage and butterfly are not stuck closed and that the throttle linkage and butterfly move smoothly and freely. The first, > Id want to know if parts were availableand service.
I will remove the filter and buy a new line to install, with a new cut off valve.
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. Hmm stuck float? I start to adjust mine with the power screw out 1 1/2 out and the idle screw 1turn out. I did not install a new fuel line and turn off valve as of yet, but have them on order. My guess - You need new plugs. Finally did the carb air intake test. at least the one installed does not match the picture they printed for me. The carburetor appears to have two adjustments, but I don't know which does what.
New float checked and re=checked to ensure adjustment and clearance.all jets and passages carefully cleaned. The venturi must seat properly in the carb body. First You need to take that filter off the fuel line. 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. As I recall, one end is slightly larger in diameter than the other and sits down in the casting.
}, : in the carburetor is causing the flooding, if this is indeed the : problem.
How about the linkage to the governor from the carb? It appears that even though the carb is full,fuel is not reaching the combustion chamber as the plugs remain dry.
"name": "Wayne Louton" -- Geoffrey Leach C/C++/X11/Motif/OpenLook Implementationge@netcom.com Mountain Ranch Software P.O. }, When I loosen the nut at the carb end of the gas line, gas runs out. the local tractor sales co has been helpful and from them it looks like we may have installed the wrong needle valve.
"mainEntityOfPage": {
"@id":"https://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=nboard&th=396867", I now have gas flowing abundantly. The only other possibility is that you didn't adjust the float level properly. 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. : Since the gas tank sits above the engine, perhaps a worn needle valve.
we are bewildered--will try anything. thanks again.
"text": "My friends 8n ran great until recently when it just stopped and gas began running through the carb.
That is a great illustration!
JavaScript is disabled. Too much fuel to the float chamber and none to the cylinders. 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. { the local tractor sales co has been helpful and from them it looks like we may have installed the wrong needle valve. How do you know that it doesnt seem to be getting fuel?
If air leaks around it than the mixture will be too lean.
1.You need to determine that gas is getting into the combustion chamber.
From memory: the hp rating was stated as "25hp at 2000 rpm"(i think). after fixing that leak it was easy to follow your instructions on the adjusting of the jets.
8Ns didn't have fuel filters, except for the small screen in the tank.
Since the gas tank sits above the engine, perhaps a worn needle valve in the carburetor is causing the flooding, if this is indeed the problem. I love these old tractors, but they're more lovable when they run! The tractor itself isguarantted and there is guarantee of parts availability, but no mention ofservice.
My guess - You need new plugs. this is my last hope before a new $$ carb. If nothing else, I am learning something.
Obviously I am doing something wrong but I have Followed the manual carefully. 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. I appreciate any advice, as I am not carburetor savy!! After warming up for a few minutes, I moved it about 100 yards. You have fuel to the float bowl but not to the cylinders as I understand it.
Care has been given to avoid vacuum leaks. Intake has vacuum.
is rated. 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.
It was 25 hp and hasa 3pt hitch. New float checked and re=checked to ensure adjustment and clearance.all jets and passages carefully cleaned.
Thanks for your interest an we appreciate any help.
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.
"url": "https://www.yesterdaystractors.com/graphics/smllogo.png",
Rebuilding the carb on an old tractor couldn't be much simpler.
Also make sure that your choke linkage and butterfly are not stuck closed and that the throttle linkage and butterfly move smoothly and freely. "userInteractionCount": 7
this is in ideal warm temperatures- I hate to think what it would be like to start it, if it were cold outside.
The spark plug test seems to be as you explained in greater detail in the above post.
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! Any thoughts on why I am not getting gas to the line?
Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation.
Still won't start. Make sure you have all the screens in the line. Have you tried blowing air in the passages to make sure they are free and clear?
So now not sure where to go next. Good luck. I hired a mechanic to rebuild it and now it runs worse than before the rebuild. 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.
As I recall, one end is slightly larger in diameter than the other and sits down in the casting. 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. "height": 57 Gas came out the air intake which is good but the spark plug electrodes are still dry.
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. this is my last hope before a new $$ carb. This was a very reliable starting tractor prior to taking it apart.
Is that some sort of an overflow weep hole? Then while it was idling for about 5 minutes, it started sputtering and died.
Let us know how it turns out. JavaScript is disabled.
>> 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.