I fought a similar problem for a long time on my 1939 A. The problem turned out to be a restriction in the intake manifold. I bought it with a stuck engine, and put new sleeves & pistons in and completely rebuilt the motor, but it always seemed to run bad under load, like it was missing on a cylinder. It would start on two cranks and idle great, but when advancing the throttle, it would 'putt-putt' like a 2 cyl. John Deere. Switched carb and mag with my nice running B, made no difference. Checked timing, valve clearnace, etc. many times; still ran bad.
This spring I took the carb off to clean it when it flooded, and I put my finger in the intake to see if it was wet from gas. That's when I noticed the passages felt restricted. I took the manifold off and found that were the passages branch out above the carb were restricted down to about 3/8" or 1/2" hole, and they should be about 1". I couldn't get the stuff out of the manifold, even by sandblasting. It almost looked like casting slag. I bought a new manifold for $100 on eBay, and the tractor runs great now.
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 - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.