Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Kountry Life
  
Ford Tractors Discussion Forum
Order Ford 4000 Parts Online

Re: Ford 4000 gasoline 1972 running rough

[Show Entire Topic]  

Welcome Guest, Log in or Register
Author  [Modern View]
mikewood869

10-25-2019 17:56:26




Report to Moderator

Is the bottom of the carb wet? The float gets stuck and I have to pull the drain plug on the bottom of the carb and with a wire or something and pock at the float.




[Log in to Reply]   [No Email]
rams2050

10-26-2019 07:25:15




Report to Moderator
 Re: Ford 4000 gasoline 1972 running rough in reply to mikewood869, 10-25-2019 17:56:26  
Thank you both so much! You've given me some ideas that I can try out.

I don't really know what kind of carburetor it is but I have never replaced it and I have had it for 35 years. It just got all new spark plugs and wires two or three years ago. It had been running great until about a week ago so I'm just grasping at straws here and you have given me some things to try. Thank you.



[Log in to Reply]  [No Email]
Dean

10-26-2019 07:46:38




Report to Moderator
 Re: Ford 4000 gasoline 1972 running rough in reply to rams2050, 10-26-2019 07:25:15  
Always verify that the ignition is spot on before looking to carburetion, even if your experience tells you otherwise.

"Running rough" (missing) is generally (I did not say always) caused by faulty ignition, but it is nearly impossible to diagnose such symptoms in a chat forum.

Is it flooding? Black smoke? If so, look to float level. The OEM Holley carburetor is very sensitive to float adjustment.

Does it stumble only upon tip-in (throttle up)? If so, look to the vacuum operated accelerator pump and the usually defective vacuum advance motor, which affects intake manifold vacuum.

Many folks, herein, do not like the Holley carburetor used on Ford tractors but it was a very good carburetor in it's day, and quite simple as compared to contemporary automotive carburetors. Should you decide to rebuild yours, bite the bullet and buy your overhaul kit from a CNH dealer. Insist upon the expensive genuine CNH kit rather than an aftermarket kit and pay close attention to the float level and float drop adjustments. Be certain to take both tractor SN and carburetor SN with you when you visit your CNH dealer to order your kit (they will NOT have one in stock) and insist upon speaking with an experienced parts person.

Finally, disassemble your carburetor before ordering your kit. Some (many?) Holley carburetors cannot be cost effectively overhauled due to, e.g., corrosion damage. If this is the case with your carburetor, you will need to replace it with a Zenith.

Dean

[Log in to Reply]  [No Email]
rams2050

10-26-2019 08:16:26




Report to Moderator
 Re: Ford 4000 gasoline 1972 running rough in reply to Dean, 10-26-2019 07:46:38  

Thank you for all the great information And please excuse my ignorance but what is 'CNH?' Thanks, again, in advance.



[Log in to Reply]  [No Email]
[Show Entire Topic]     [Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). We have the parts you need to repair your tractor - the right parts. Our fast shipping, low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2019 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 Headquarters

Website Accessibility Policy