You can use a simple ohm meter to see if a coil is BAD buttttttttttt it will not tell you if its GOOD. Theres typically say 1.25 to 3.5 ohms (depedns if a 6 or 12 volt coil) in a coils LV primary between its lil + and - terminals and maybe 5,000 to under 10,000 ohms in its HV Secondary. If either is open (no continuity) the coil is baddddddddddddd but even if it passes both those checks, it can still fail once its warmed up especially a HV breakdown failure which youre not gonna see with that LV ohm meter test.
Likewise an ohm meter will show if a condensor is baddddddd but it cant tell you how good it is or its MFD rating or if its leaky, it takes a real capacitor tester to do that. Using a DC ohm meter it should show an open circuit once its charged but if its a short its baddddddddd. If you have an old analog ohm meter like my Simpson 260 a kickback/charge test can tell a bit more about how well and if shes charging up or not.
Good way to test a coil is wire it up and allow curent to flow then interrupt the current (simulates points closed then opened) flow n see if theres a spark by using a coil wire out the top tower to ground.
My Ignition troubleshooting shows other coil checks
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 - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
