Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

John Deere Tractors Discussion Forum
:

John Deere L Spark Plug Question

Welcome Guest, Log in or Register
Author 
BURT

01-06-2005 17:45:53




Report to Moderator

Please forgive me if this type of question has been answered a dozen times before, but I tried to search this site before posting.

Would running a hotter plug help the plugs last longer with my usage?

I have a 1940 L with Champion W14 plugs. I have read that plugs can foul fairly quickly (and these do), especially with a tractor used like mine - a lot of idling, a trip around the block a few times, but it is not worked heavily at all (I live in the suburbs).

From what I have read, the W14 is a fairly cold running plug. Would a W18 work better? Are there other brands that would work better? An Autolite 3076 appears to match the W14, but is there a hotter running Autolite that would work? Or an AC, Motorcraft, ...?

Any and all advice/suggestions would be appreciated.

Thanks,

Steven

[Log in to Reply]   [No Email]
Clooney

01-07-2005 03:17:28




Report to Moderator
 Re: John Deere L Spark Plug Question in reply to BURT, 01-06-2005 17:45:53  
BURT, I�m not an �L� pilot so can�t really comment on what works best in the �L�.. I have worked with a lot with the 7/8� spark plugs in other tractors so can attempt to make plug recommendations based on that though..

I don�t use the W-14 in anything anymore due to the modern emission friendly gasoline�s being much harder to ignite & it�s history of fouling spark plugs in low compression weak spark engines..

I would probably try the W-20 for a use like yours or even the W-89D.. If you go that route make sure the plug electrode will clear the piston first.. The Autolite 3077 is also a very hot plug but again make sure it�s longer electrode will clear the piston at TDC..


You might also check your ignition (spark plug) wires for being a solid metal core & not some automotive carbon resistor wire. As that can cause plug fouling issues.. Then make sure you have a good hot blue spark as even the hottest plugs won�t help if you have a weak spark..

Clooney

[Log in to Reply]  [No Email]
John T

01-06-2005 19:55:30




Report to Moderator
 Re: John Deere L Spark Plug Question in reply to BURT, 01-06-2005 17:45:53  
Steven, I think the W 14 is the specified plug for the 7/8 inch (W 18 would be hotter) but the Autolite 3076 or 3077 would also run hotter. If you like the Autolite 3076 you mentioned and it fits, I WOULD HIGHLY RECOMMEND the even hotter side wire electrode Autolite 3077 plug or the equivalent AC 18 (try those if 7/8). I have less fouling and sooting problems using the side wire 3077 then I do on the conventional gap 3076.

As I posted below, it helps if you use shutters or air restrictions or any sort of thermostat device to get the temp up to 180 or more,,,,, dont run the carb any too rich,,,,, ,make sure theres no air or filter restrictions,,,,, insure the choke butterfly opens fully,,,,, ,,,and avoide long slow idles plus have her tuned meticulous and use wire core wires.

John T

[Log in to Reply]  [No Email]
jdman(MO)

01-06-2005 18:48:24




Report to Moderator
 Re: John Deere L Spark Plug Question in reply to BURT, 01-06-2005 17:45:53  
Well I have an LA and I have tried just about everthing including 2 stroke plugs, hot plugs. One thing that seems to help on all the old 2 cyl jd's is not to slow idle them. On the other side I have a 38 A that never fowls plugs even if it barely turning over. Just go figure. Russ



[Log in to Reply]  [No Email]
BURT

01-07-2005 09:07:53




Report to Moderator
 Re: John Deere L Spark Plug Question THANK YOU in reply to jdman(MO), 01-06-2005 18:48:24  
Would just like to say thank you to all who responded to my question about spark plugs. It looks like I have several options to try and see what works out best, along with some other advice on other items to check. Thank you!!

Steven



[Log in to Reply]  [No Email]
Deeredale

01-07-2005 05:00:04




Report to Moderator
 Re: John Deere L Spark Plug Question in reply to jdman(MO), 01-06-2005 18:48:24  
The Autolite 3077 works fine & will almost solve every fouling problem with the Ls.



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

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 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