Yesterday's Tractor Co. Affordable Parts, Just in Time
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

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

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

Research & Info
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

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

John Deere Tractors Discussion Forum
Show Parts for Model:

4020 Pencil Injection Nozzles-Suggestions

Author  [Modern View]

01-15-2014 14:30:43

Report to Moderator

I"m preparing to do some major work on my 4020 diesel (1967) in the transmission department, but also have a fuel smoking issue at speeds between slow idle and about 1500 rpm. Above 1500 rpm to WOT the exhaust runs clear like a normal engine should.

After talking to some other locals about this it"s suggested that the injectors are the likely issue. The pump was reworked about 1000 hrs ago but the injectors haven"t been replaced since probably the early 90"s or perhaps 5-7K hrs ago.

I"ve priced new from JD which run $109 each. Their reman injectors are $73.28 with exchange.

I"ve seen other after market pencil injectors in the $40 range.

I"d like to know what others think about these lesser expensive injection nozzles versus the JD new and JD reman.

This particular 4020 will see light work with a loader and perhaps pull a moldboard plow once a year and a rotary cutter probably twice a year on 10 acres.

Tyler in IL

[Reply]   [No Email]

01-17-2014 06:12:34

Report to Moderator
 Re: 4020 Pencil Injection Nozzles-Suggestions in reply to Tyler-MO, 01-15-2014 14:30:43  
Until somebody actually can state the technology involved - I do no believe there is a cost-effective method to rebuilt a pencil injector. To do so the seats would have to be reground and narrowed to the original size. All the pencil injectors I've seen first-hand sold as "rebuilt" were just cleaned-up used injectors that did not have the service life new ones. But I am not always up to date on the latest techs. Lavoy says he sells pencil injectors that truly ARE rebuilt so maybe he'll chime in.

I put a set of brand-new Chinese pencil injectors in my Deere 300B maybe 5 years ago at $38 each. They've been fine. I also put a set in my Case 580CK maybe 8 years ago and they also have been fine. I also put a set in my neighbor's Deere 4000 a few years ago with zero issues.

In regard to checking and setting the "pop" pressure. Keep in mind that pressures for new injectors are different then for used injectors. Do not try to set used injectors at "new" specs.

[Reply]  [No Email]
David G

01-15-2014 20:58:00

Report to Moderator
 Re: 4020 Pencil Injection Nozzles-Suggestions in reply to Tyler-MO, 01-15-2014 14:30:43  
I bought a set from china, they tested OK, but the welds cracked on about half of them after 1-2 years.

[Reply]  [No Email]

01-15-2014 16:00:49

Report to Moderator
 Re: 4020 Pencil Injection Nozzles-Suggestions in reply to Tyler-MO, 01-15-2014 14:30:43  
Whatever you do take the new injecters and have them checked before installing.The pop off pressure should be close on all of them when set correctly.You would be suprised how often a set of new injecters need readjusting.I bought the last USA made Staydine (sp?) injecters from my dealer about a year ago,now they are made in China.Deere does not build them so you maybe getting the same product from several places.

[Reply]  [No Email]

01-15-2014 15:22:50

Report to Moderator
 Re: 4020 Pencil Injection Nozzles-Suggestions in reply to Tyler-MO, 01-15-2014 14:30:43  
Tyler, Go to you pump repair station and buy 6 new injectors for a little more than what remans cost at JD.

[Reply]  [No Email]
[Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply]

Hop to:
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums

Copyright © 1997-2014 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