TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

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

Ford 9N, 2N & 8N Discussion Forum

coil test

Welcome Guest, Log in or Register

Author

sarge74

05-05-2006 06:10:01

Report to Moderator

How can I test my 12 volt front mount coil besides checking for spark at the points or plugs?

[Log in to Reply] [No Email]

2NIowa

05-05-2006 10:21:52

Report to Moderator

Re: coil test in reply to sarge74, 05-05-2006 06:10:01

If I recall Dells avise...Notes are at home and my telepathy is rusty.

Using an ohm meter connect the red lead to the bolt that is hooked to the power.
Using the 200 ohm scale, check the resistance on the primary terminal (pigs tail) The reading should be around 1.? ohm for 6v and 5.? for 12v.

The secondary (20k scale & chrome/silver terminal) should read 7.? for both 6 & 12v. The main difference is in the primary side.

This may be close but I don't smoke cigars. HI HI

My most recent 12v coil from my local Ford dealer read at 2.8 ohm Primary and 8.2 ohm for secondary resistance. With the dealer supplied resistor all works well. Good Luck.

[Log in to Reply] [No Email]

old

05-05-2006 08:36:37

Report to Moderator

Re: coil test in reply to sarge74, 05-05-2006 06:10:01

One way I know of you will not like. You hold on to it and hook a battery up to it off and on and hold your finger close to the spring on the bottom. That will tell you if its good or bad. But you will only do it once and you have to have both + and - hooked to it. Reason you will not like it is becasue it will lite you up.

Hobby farm

[Log in to Reply] [No Email]

sarge74

05-05-2006 08:48:27

Report to Moderator

Re: coil test in reply to old, 05-05-2006 08:36:37

Thanks Old, but I was already aware of that method, I thought there might be a less painful way to test it.

[Log in to Reply] [No Email]

Dell (WA)

05-05-2006 10:24:32

Report to Moderator

Re: coil test in reply to sarge74, 05-05-2006 08:48:27

sarge..... ...there ain't no cheap shadetree mechanic technical test for enny ignition coil ...except... by spark-gap. I recommend making a sparkie tester outta enny old sparkplug by gently bending the side electrode out for a full 3/16" gap. clamp yer tester metal shell to enny convient metal ground brackett and plugg-inn enny convient sparkie wire. Now crank yer engine over with ignition switch ON and watch yer sparkie tester gap for blue-snott sparkie or wimpy yellowish-orangish or NO sparks. Even iff'n ya haffta buy the parts, $5 (cheap)..... ...Dell, yer self-appointed sparkie-meister

[Log in to Reply] [No Email]

sarge74

05-05-2006 10:35:28

Report to Moderator

Re: coil test in reply to Dell (WA), 05-05-2006 10:24:32

Thanks again guys...I have ruled out a bad coil. See my next post at "final ????" and help me with that one and I think I will be on my way to a happy summer of cruising on my 8N.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

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 ]

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