I would start with adjusting the valve lash, and a valve train inspection. Look for broken valve springs, bent pushrods, watch that all the valves are opening and closing.
Then run a compression test. Don't worry so much about the amount of compression, but look for differences between cylinders. Ideally they need to be within about 10% of each other.
When you had the carb apart, did you check the float for buoyancy? Did you set the float level? Does the carb drip gas if the fuel valve is left on? Did you adjust the main jet? How is the fuel supply? If the tank is contaminated or flaking rust, you will have ongoing carb problems. It needs a clean, reliable source of fuel to function properly. Any of these things can lead to rich running, but before blaming or adjusting the carb, everything else must be in order.
I'm not aware of any engine that has drain holes in the exhaust manifold. Makes me wonder if possibly the manifold is burned out. Some are designed as a one piece intake and exhaust casting. On those, the exhaust can burn through internally and enter the intake side, which causes them to run terribly, similar to a vacuum leak but worse!
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. 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 - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
... [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.