Adrian, I know it is your story and you can stick to it, but I am here to tell you what causes a gas engine to diesel has ZERO.. I mean ZERO to do with the ignition. The only very minor part it may play in it is if you have the timing off so far or something like this that would cause the actual engine temperature to get much higher than normal. This is because when you turn the ignition off the spark STOPS, end of story! NO more effects from spark in the cylinders. The number one cause of dieseling is the idle is set to high so the throttle plate is not closed enough. So namely to much AIR which is mixed with fuel is being let in the intake manifold. This is usually compounded by carbon deposits built up in the cylinders. They get red hot while the engine is running and then when you shut off the spark the hot carbon continues to light off the air/fuel mix in the cylinders. Unless you have a super duper hop up job on your Super A if the idle is set slow enough it should have very little tendency to diesel due to the compression is not that high. Now the higher compression 264 and 301 six cylinders had this inherent problem. For this reason IH equipped them with solenoids that closed the main fuel circuit of the carb when the ignition was shut off.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. 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 - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
... [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.
