Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

fmjmagneto


 
Post new topic    
View previous topic :: View next topic  
Author Message
johnmetcalf
New User


Joined: 03 Mar 2012
Posts: 15


Report to Moderator

PostPosted: Wed Mar 07, 2018 4:55 pm    Post subject: fmjmagneto Reply to specific post Reply with quote

when mag is rotated I get a spark at points sometimes other times I get spark around coil at different points is this normal
 
Back to top
View user's profile
tractorguy2
Tractor Expert


Joined: 24 May 2014
Posts: 3346


Report to Moderator

PostPosted: Wed Mar 07, 2018 5:31 pm    Post subject: Re: fmjmagneto Reply to specific post Reply with quote

Sparking at the points means the points are dirty and need cleaned or the condenser is going bad. The only place the coil should spark is at the terminal in the center of the coil. If the coil has cracks in it or is soft and sticky it is bad.
 
Back to top
View user's profile
Bob
Tractor Guru


Joined: 03 Jan 1998
Posts: 51479


Report to Moderator

PostPosted: Wed Mar 07, 2018 6:51 pm    Post subject: Re: fmjmagneto Reply to specific post Reply with quote

One should NEVER rotate a mag/cause it to spark without having the secondary terminals shorted to ground or connected to spark gaps.

Doing so is simply asking for coil failure or "carbon tracking" from spark finding it's way to ground across the cap or rotor.

Same thing applies to battery ignition systems.

The really old mags had internal spark gaps to save the coil in case such a thing was done, or a spark plug wire fell off.
 
Back to top
View user's profile
CHUCK CAMBIS
Regular


Joined: 21 Jul 2011
Posts: 312


Report to Moderator

PostPosted: Sun Mar 18, 2018 9:33 am    Post subject: Re: fmjmagneto Reply to specific post Reply with quote

Exactly! I have been telling this to dozens of people. Seems like no one believes this except us. Number one response, "I have been doing this for forty years and never had a problem....................."
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Allis Chalmers All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

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