The problem sounds fuel related being that a partial choke improves the running.
Some things to check:
Try loosening the fuel cap. Could be air locking, drawing a vacuum on the tank as fuel is used/temp changes. Don't trust a cap just because it says "vented", sometimes they are not.
I doubt it has a fuel pump, but check it if so equipped.
There is a plug in the bottom of the carb. Try removing the plug, with the fuel valve on (idling if it has a fuel pump) catch what comes out in a clean glass. You should get a full flow until the bowl empties, then reduce to a steady stream. If it slows to a drip or stops, the fuel is not getting into the carb. Check for restrictions up stream, there may also be a screen in the carb fitting where the fuel line attaches. Also look at what came out, is it clean? Water? If it's cloudy or gritty the carb may need the bowl dropped and cleaned.
Check the fuel line. It should be steel, not copper. It needs to be routed as far from the exhaust as possible. If it is a gravity flow system no paper or bronze filters. You can add a screen type if needed.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
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. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
