Posted by John T on October 08, 2013 at 09:21:02 from (67.78.33.134):
In Reply to: super C ignition posted by sparky70 on October 08, 2013 at 08:52:09:
Sorry I have no coil specs or data for any particular coil, however I can give you some basics:
SO OFTEN the cause of a weak spark is the points are burned or pitted or oxide coated or mis gapped which a cleaning or filing etc may help but just replace them if they are badly burned or pitted. True, a condensor can also go bad but Id try the points FIRST
Is the weak spark to the frame or across a plug gap???? If its the plugs perhaps they are the culprit?? Hows the cap and rotor look???
If its a Mag coil, the LV primary may be in the say 0.25 to 2 ohms or so range while the HV secondary will be several thousand ohms
If its a battery powered coil ignition, the LV primary may be in the 1.25 to 2 ohms range for a 6 volt but more like 2.5 to 4 for a 12 volt. Again the HV secondary will be several thousand ohms
A low voltage ohm meter can tell if a coil is definitely BAD like an open circuit, but it cant tell you if its totally good cuz often there are HV breakdowns especially once up to temperature
Run my Ignition Troubleshooting Procedure which may help
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 - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
... [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.
