It looks like you have checked each part three times or more. It is unfortunate that you do not have a spare carburetor to swap out and eliminate it at one swell foop.
The following are checks I thought of but discounted as unlikely or you probably already checked.
A. Failing coil no. You don't have Lucas coil which will do this.
B. Mixed up plug wires. No. It does not backfire and you triple checked it out by observing rotor direction and cylinder position by checking the valves to see if they were in exhaust or intake mode or closed.
C. Timing not too far advanced. No. You checked it and the vacuum advance by disconnecting it with the engine running and trying to speed the engine up. Timing light checked all this out.
D. Bad plugs? No. You did not put Champions in it. They sometimes come defective. Rare, but I have seen it.
E. Bad distributor cap. no. There is no carbon tracking and the rotor strip is not too far from the studs. The carbon button on cap shows signs that it is contacting the brass strip on the rotor.
F. Blocked exhaust pipe. No. You checked it to make sure it was not restricted or dead rat in the pipe. Engine does not sound like exhaust blocked.
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 - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
