|
Tractor Talk Discussion Board |
Re: Re: Re: JD diesel will not start
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by jdemaris on February 26, 2004 at 05:28:45 from (209.23.31.225):
In Reply to: Re: Re: JD diesel will not start posted by Dirthog on February 26, 2004 at 04:05:37:
Yeah . . . I said I was being simplistic and I wasn't trying to write a service manual - just provide some non-technical real-world advice. Guess you can add #5 to your list - the diesel needs someone to start it. Or #1b - the CORRECT fuel, or #3b - not just compression, but enough compression to cause enough heat for combustion to result, etc. etc. &c. Another note - if there is no air, what is being compressed?
Since, as far as I can tell, the thing ran when it was borrowed, but now does not - and needed a new radiator - I made some quick assumptions based on data provided, i.e. inferrence. Lack of air isn't going to make the engine push white smoke at cranking speed. As far as timing goes, theres very little chance, on that engine, that the timing got far enough out to prevent it from starting unless someone had it apart. There's no timing chain, and nothing inside the pump that can make it go that far out of wack. The pump driveshaft is designed to shear when strained, but if so, it would pump NO fuel. The fuel-pressure regulator inside the Roosa Master injection pump can blow its plug and overadvance - but not at cranking speed. The pump's head and rotor can get scored to a point where not enough fuel can be pumped to start at cranking speed, the old-style governor weight retaining ring can shatter and subsequently, pieces of it can plug the housing pressure-regulator/check-valve where the return fuel line hooks - and make the pump shut off after it starts, etc. etc.
Follow Ups:
Home
| Forums
Today's Featured Article -
Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
... [Read Article]
Latest Ad:
1945 Farmall wide body gas with pto and front plow. Runs good but needs new points.
[More Ads]
Copyright © 1997-2024 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 HeadquartersWebsite Accessibility Policy |
|
