Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Discussion Forum

Wc won't run

Welcome Guest, Log in or Register

09-15-2001 17:03:27

Report to Moderator

Rebuilt engine, valve job, head magnufluxed, rebuilt carb, rebuilt mag, tractor ran beutiful for 10 or 15 hours. then occasionaly it would sputter. Soon after it would run great, then quit, restarted when cool. Then barely would start, run badly then quit. Now will not start at all, pop once in a while. I am starting to hate this tractor. Please help.

[Log in to Reply]   [No Email]
Duey (IA)

09-15-2001 18:32:24

Report to Moderator
 Re: wc won't run in reply to lee, 09-15-2001 17:03:27  
Here are a few things to check out. First remove the wire from the switch at the mag (could be a bad switch-also check the little strap on this connection, if there is one, and see that it is not grounded) and see if you now have spark.
If not, next remove the mag and clamp the flange in a vise as this easier than cranking and stretching etc. Remove the 4 screw cap and very carefully check the points. Even a oily fingerprint can stop the low voltage from going through the points. Clamp a visegrip on the drive lug to turn it over. When the impulse lets go, you should see a spark between the points. If you don't, you are either losing the spark to ground, like the condenser connection touching or a field wire shorted out or the points are not adjusted to .020 gap or they are burned or dirty. (The points actually ground the spark that is generated by the armature and fields through the coil. This low voltage passing through the coil causes an induced high voltage surge that goes to the sparkplug.)
Soooo, if you have the low voltage timed right and the rotor is at the correct lug at the correct time with the camshaft, you have "Fire in the Hole". Now if you have the spark at the points and don't have spark at the plug when everything is assembled, it could be out of time, a bad coil or condenser, possibly a cracked cap, or shorted out rotor. A shorted cap or rotor can have what appears to be a crack where the spark goes to ground. It sounds like you know how to correctly time everything, you just need a spark. I hope I have enlightened you to some of the workings of a magneto and this helps you resolve the problem. Let me know. I always like to hear back.

[Log in to Reply]  [No Email]
Jerry Coulter

09-15-2001 17:40:21

Report to Moderator
 Re: wc won't run in reply to lee, 09-15-2001 17:03:27  
I suspect failure of the rebuilt mag. But first crank it over by hand and observe that there is good compression on all 4 cylinders and the mag makes a loud click just after the peak of compression. Then pull off the air cleaner hose and shoot a LITTLE ether into the carb and try to start it. If this doesn't make it try harder, you must have an ignition problem. If it does start and die, you have a cloggage somewhere in the fuel system. Don't get discouraged with a WC, it is one of the most reliable and simple tractors ever built.

[Log in to Reply]  [No Email]

09-16-2001 18:12:58

Report to Moderator
 Re: Re: wc won't run in reply to Jerry Coulter, 09-15-2001 17:40:21  
You could have a clogged fuel filter. Rust from the tank could have clogged it after running for a number of hours.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

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 ]

Home  |  Forums

Copyright © 1997-2023 Yesterday's Tractor Co.

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.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy