|
Farmall & IHC Tractors Discussion Board |
Missing F-20 - - Wednesday update
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Pete L on June 16, 2004 at 19:33:52 from (24.236.154.30):
Guys - Have done a lot of investigative work since my original message this past Friday. Lots of things checked, but to no avail. I need some information from you F-20 owners to hopefully find the "missing" issue on my tractor. 1) Can someone check their valve timing? Per the book, #1 cylinder should close its exhaust valve slightly before TDC, and open the intake valve just past TDC. Though this seems right, my tractor's valve cycles were running about 10 degrees late in the cycle. I adjusted the timing gears 3 teeth to get the cycle back to where the book said they should be. 2) Has anyone ever tested the vacuum on their intake manifold? I ended up drilling and tapping a hole (1/8" NPT) on the forward horizontal leg of the intake manifold and installing a vacuum gauge. Am only pulling 10-12" vacuum at no load speed. Seems low. Can you check yours? 3) During examination of the carburator innards, the die cast venturi has a couple flats cast into it on the outer flanges. It appears one is supposed to lock into a tab protruding from the main jet. Is it critical that this tab locate with the flats in the venturi, or anything else? 4) Some of you guys indicate frequently missing as "the nature of the beast" for F-20s when the spark is advanced and under no load. Are there some of you F-20 owners that have tractors that purr under any condition? 5) Last thing - - My tractor has an older aftermarket gasoline-only manifold with the letters HF122-L cast into it. Others of you have this manifold? Those of you with it, do your engines run smooth or miss when the spark is advanced under no load conditions? Thanx all. Will keep you posted with my findings. Pete
Follow Ups:
Home
| Forums
| Order Support
Today's Featured Article -
Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[More Ads]
Copyright © 1997-2026 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 |
|
