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
Salvage

Community
Discussion Forums
Project Journals
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
Ford 8N/9N Club
Kountry Life
  
Ford Tractors Discussion Forum
:

Colder Plug for 641 with high compression pistons

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

06-28-2016 17:55:57




Report to Moderator

So I ordered a rebuild kit this winter and instead of coming with stocker flat top pistons it came with dome tops. Not knowing any better the autoparta guy crossed the al437 with the champion rc12lc4. My engine is diessling bad and the plug shows symptoms of being lean. I think I may need to jump to a colder non resistor plug? Suggestions?




[Log in to Reply]   [No Email]
anwalker

06-29-2016 15:58:31




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
This tractor is how my grandfather made his living and the first time it's ever been rebuilt. Started it up to discover the new wedge seals were leaking, along with the radiator and oil filter adapter. I just put the oil pan back on last night and filled her back up with oil, hopefully I'll have the radiator back on this week. I still need to install a new set of points, change the plugs over to 437 or 216 autolite and get the timing dialed in, and adjust the idle down. I pulled the champion plugs yesterday and they were running leeeean. My timing light is on a permanent loan so I'll need to pickup another. Gotta get this thing going and back on the farm. Lots of work to do and running way behind.

[Log in to Reply]  [No Email]
David G

06-30-2016 12:29:13




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-29-2016 15:58:31  
Plugs don't run lean, they are an indicator of what the engine is doing.



[Log in to Reply]  [No Email]
RickB

06-29-2016 14:59:08




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
You are right about the guy not knowing any better selling you Champion plugs.



[Log in to Reply]  [No Email]
David G

06-29-2016 05:31:53




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
Dieseling is caused by idle set to fast, slow it way down.



[Log in to Reply]  [No Email]
Dean

06-28-2016 20:37:30




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
Spark plug heat range is likely not the problem.

Set the idle to 450 RPM or less and reduce the engine to idle speed before shut down.

Adjust the carburetor to obtain correct mixture under load.

Dean



[Log in to Reply]  [No Email]
anwalker

06-28-2016 19:39:42




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
Quoting Removed, click Modern View to see

Now that I think about it, I haven't adjusted the governor springs yet.



[Log in to Reply]  [No Email]
anwalker

06-28-2016 18:51:36




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
Quoting Removed, click Modern View to see

I beleive it's set at 550 right now. She's still going through breakin.



[Log in to Reply]  [No Email]
mmfan55

06-28-2016 19:36:12




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 18:51:36  
Sometimes on my pulling tractors: I will grab hold of the carburetor linkage or throttle shaft when I shut it down and push it closed to avoid dieseling. Some governors tend to allow the throttle to open a bit as the engine rpm slows.



[Log in to Reply]  [No Email]
mmfan55

06-28-2016 18:49:36




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
How fast does it idle ?? Many times dieseling is a result of gas still getting sucked through the carburetor because the throttle is open too far. If idling too fast changing plugs will accomplish very little.



[Log in to Reply]  [No Email]
Royse

06-28-2016 18:46:11




Report to Moderator
 Re: Colder Plug for 641 with high compression pistons in reply to anwalker, 06-28-2016 17:55:57  
Autolite 216 or Champion H10 would be cooler than the 437.

I don't know about the ones you have in there.



[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


Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and ... [Read Article]

Latest Ad: Shaw due all tractor [More Ads]

Copyright © 1997-2021 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