Posted by Bill(Wis) on January 27, 2023 at 15:18:28 from (67.86.36.109):
In Reply to: Ford 8N mystery posted by Jonesy54 on January 27, 2023 at 13:31:16:
This from the dearly departed Dell Golightly: ''It ain't how many turns that count in adjusting a carburetor. Each carb and engine is uniquely different. That's why thar's them handy-dandy fiddle screws on your carb. Can you tell the difference between the idle mixture and the main jet mixture screws? Can you tell where the low speed idle set screw is? Can you tell which governor rod connects to the carb throttle shaft? Ford owners manual sez to set BOTH the idle mixture and the main jet to 1 turn. Well that works on a new carb and a new engine. I don't think your tractor qualifies. Therefore, I suggest 1-1/2 turns for both the idle mixture and the main jet. After you get your engine started and fully warmed up (about 15 minutes), adjust the idle mixture for MAXIMUM RPMs, not maximum smoothness, understand? MAX IDLE RPMs. Tractor idle spec is 450 RPMs which is awfull slow to our ears. If your carb is anywhere near being right, you can do it. Now then, goose your throttle. If engine doesn't respond, enrich the mainjet 1/8 turn. Do it again. You may have to go out 2 turns on the main jet but no more. Learn how to read your sparkies color. After idling for 15 minutes, pull a plug. It should be a light tan or gray color. If it is sooty black you're too rich. If it is clean white, you're too lean. But most important, adjust idle mixture for MAX RPMs. Then, go plow or do heavy work for a few minutes at high RPMs and pull a sparkie and read the color. That will tell you how well you've adjusted your main jet. From the black art of adjusting carbs.......Dell
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 - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
... [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.
