Posted by wore out on November 23, 2021 at 21:59:36 from (64.255.159.199):
In Reply to: spark coil questions posted by Bob N.Y. on November 23, 2021 at 14:06:20:
Quoting Removed, click Modern View to see
X2 to what Jim wrote!
"Youtube is not always correct!!!
"The markings on a coil with the primary terminals labeled "BATT" and "DIST" will only be correct when it is used on a system of the same ground polarity as the machine it was designed/sold for."
It's easy to determine if the spark polarity is correct with an ignition oscilloscope (but you probably don't have one, LOL), the voltage spike that leads up to the firing of the sparkplug is "negative-going" when coil primary polarity is correct.
If you are a bit more adventurous you can use the "pencil test" to determine spark polarity!
"A quick simple check for correct coil polarity can be made with an ordinary "lead" pencil.
Place the lead of the pencil in place between the spark plug wire and the plug.
Start the engine and observe the spark (fig. 6-52).
If it "flares" or has a yellow tinge on the plug side, polarity is correct.
If it "flares" or has a yellow tinge on the wire side, polarity is reversed.
I'll leave it to you to figure out how to hold/support the pencil without getting a shock!
Upload one or more videos to your post. Photo and video filesizes should be less than 8MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
