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 

Ferguson TO20 has no spark


 
Post new topic    
View previous topic :: View next topic  
Author Message
Spikes84CJ7
New User


Joined: 28 Feb 2021
Posts: 3


Report to Moderator

PostPosted: Sun Feb 28, 2021 3:18 pm    Post subject: Ferguson TO20 has no spark Reply to specific post Reply with quote

No spark from the coil or the distributor on my Positive Ground Ferguson TO-20. This tractor has sat for the last 16+ years and Im not sure if it was running before they parked it. I have replaced the spark plugs, plug wires, coil (ive tried two new coils), replaced the points and capacitor, new distributor cap and a new wire from the + side of the coil to the distributor (this is a Positive ground system). Lastly I have jumped the ignition wire straight from the battery to the - side of the coil. I have 6v on both side of the coil and only 6v coming out of the hot side of the coil going to the distributor.

Shouldnt the hot side of the coil be much higher than 6v?

I have used a circuit testing light to see if the circuit is cut when the points on the distributor close. The light does not flash off while turning over the engine. Is this where my problem lies? What could cause this? A bad ground?

Points have been set as per the manual at .022
I also removed the grounding strap and cleaned the connection. However, the whole tractor has some surface rust. Should I run a larger grounding wire from the grounding strap to the engine block?

Thanks Im advance!

Spike
 
Back to top
View user's profile
Steve@Advance
Tractor Guru


Joined: 12 Nov 2013
Posts: 19612


Report to Moderator

PostPosted: Sun Feb 28, 2021 6:00 pm    Post subject: Re: Ferguson TO20 has no spark Reply to specific post Reply with quote

You're on the right track with the test light.

That the light stays on means the points are not making contact.

Try arcing across the points with a screw driver. If you can get a spark, and make the light go off, that means the points just need cleaning. Being new they have a protective anti corrosion coating. Wet a piece of paper with carb cleaner or alcohol and draw it between the contacts.

If no spark at the points, start checking for a bad connection somewhere between the coil and the points, especially the terminal that goes through the side of the distributor.
 
Back to top
View user's profile
Spikes84CJ7
New User


Joined: 28 Feb 2021
Posts: 3


Report to Moderator

PostPosted: Sun Feb 28, 2021 6:42 pm    Post subject: Re: Ferguson TO20 has no spark Reply to specific post Reply with quote

Thanks for the reply Steve. I will try this tomorrow and will reply back with my findings. Im hoping and thinking it is something simple like this.

I did arc the points earlier with a screw driver but didnt think about trying it while using the test light.
 
Back to top
View user's profile
Jim L WA
Long Time User


Joined: 17 Jun 2010
Posts: 1319


Report to Moderator

PostPosted: Mon Mar 01, 2021 10:46 am    Post subject: Re: Ferguson TO20 has no spark Reply to specific post Reply with quote

You could also use your test light from the neg. bat post to the plate in the distributor to check your theory about it not being grounded.
 
Back to top
View user's profile
rvirgil_KS
Tractor Expert


Joined: 07 Jul 2007
Posts: 1978
Location: Northwest Kansas

Report to Moderator

PostPosted: Mon Mar 08, 2021 11:20 am    Post subject: Re: Ferguson TO20 has no spark Reply to specific post Reply with quote

"I have 6v on both side of the coil and only 6v coming out of the hot side of the coil going to the distributor.

Shouldnt the hot side of the coil be much higher than 6v?"

The center post of the coil will only have high voltage ( up to several thousand volts)when the points open and the primary coil energy collapses and induces a high voltage in the secondary. Your hand held volt meter is incapable of measuring that voltage spike.

The only relevant voltage reading you will get from the center post is that the 6 or 12 volts would indicate that you have continuity through the high voltage secondary winding of the coil.

The coil is a transformer with one side of the primary and one side of the secondary windings tied together. With no load on the large secondary output you will see primary battery voltage back through the joint connection.
 
Back to top
View user's profile
Spikes84CJ7
New User


Joined: 28 Feb 2021
Posts: 3


Report to Moderator

PostPosted: Wed Mar 10, 2021 5:04 am    Post subject: Re: Ferguson TO20 has no spark Reply to specific post Reply with quote

This did the trick! I cleaned the points and it fixed the problem. Put a little starter fluid in the carb she fired right up. Thanks for the Pointers. Pun intended..

Spike
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Harry Ferguson All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
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 ]

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