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
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
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
Kountry Life
Discussion Forum

Need hotter spark

Welcome Guest, Log in or Register

03-13-2002 18:48:01

Report to Moderator

I have an Int 350 that fouls the plugs. If I pull a wire from the cap and hold it 1/2" away the plug fires just fine. What causes this? What can I do to get hotter spark?
I have changed the plugs, wires, & cap and they foul within the hour.

[Log in to Reply]   [No Email]

03-14-2002 14:35:41

Report to Moderator
 Re: need hotter spark in reply to JEB, 03-13-2002 18:48:01  
I agree with Bob Kerr, If you got black smoke, you're running too rich. The soot from the unburned fuel is fouling your plugs.Tune your carb, rebuild if necessary.

[Log in to Reply]  [No Email]

03-14-2002 07:21:08

Report to Moderator
 Re: need hotter spark in reply to JEB, 03-13-2002 18:48:01  
Many people do not understand the heat range's of Spark plugs The heat range of a plug deals with how fast the heat is transferred from the electrode of the plug ,,therefore if you keep the electrode hotter they will stay cleaner by burning off any fouling,but you have to be carefull not to get too hot of a plug or it will damage plug from too much heat ,,so you have to adjust in small increments when changing heat ranges hope this helps Dave

[Log in to Reply]  [No Email]

03-13-2002 19:55:43

Report to Moderator
 Re: need hotter spark in reply to JEB, 03-13-2002 18:48:01  
When our 544 does that it is time to regap the points. You didn't mention anything about the points in your post. OR make the switch to the electronic ignition, I hear they are better for avoiding the fouling.


[Log in to Reply]  [No Email]

03-13-2002 19:16:51

Report to Moderator
 Re: need hotter spark in reply to JEB, 03-13-2002 18:48:01  
What is fouling your plugs fuel or oil?

[Log in to Reply]  [No Email]

03-13-2002 20:04:53

Report to Moderator
 Re: Re: need hotter spark in reply to Dan , 03-13-2002 19:16:51  
I had a 706 that would start fouling plugs within one-half an hour. I started increasing the temperature range by replacing with hotter plugs. Nothing worked until I put in Champion Y or D 21's I believe. Anyway the "21" is right. This tractor was burning 2 - 3 quarts an hour. No problem ..... these plugs stayed clean! I know ... some do not like Champions. But they really worked. It looked like a diesel sitting there running the corn dryer. You might ask yourself what the real problem is and can it be fixed easily? The problem with the 706 was a plugged air intake system. The restriction caused to much vacume on the intake stroke. This actually sucked the oil up along the piston. There was a bunch of straw, leaves & stems in the pipe leading to the air cleaner. Couldn't see the restriction until extensive examination. Anyway the restriction is removed and the 706 is back to normal!

[Log in to Reply]  [No Email]

03-14-2002 05:59:43

Report to Moderator
 Re: Re: Re: need hotter spark in reply to andy, 03-13-2002 20:04:53  
I think it's fuel fouling the plugs, I get black smoke out exhaust. Have replaced plugs with CH D21's, points, cap, wires, none of which helped.
Compession is OK.
When running I pulled wires to isolate which plug had the most problem, and when one particular wire was 1/2" from the cap and arching across the gap the engine ran great like this for hours.

[Log in to Reply]  [No Email]
Bob Kerr

03-14-2002 09:56:35

Report to Moderator
 Re: Re: Re: Re: need hotter spark in reply to JEB, 03-14-2002 05:59:43  
I would forget about the ignition and fix the carb first, If you are getting black smoke lean out the mixture. If that doesn't help, rebuild the carb. Too much fuel causes black smoke, and it also will cause cylinder wall wear from the excess fuel "washing" the oil off the walls. Then after you get that straightened out run it for a while as you normally do and them pull out the plugs right away and look at them. They should be fairly clean at the gap area and the porcelain should be a very light tan color if you have fairly new plugs.If the gap area is black or grey, go with the next highest heat plug, But remember,IH engineering did all the homework on plug heat range and brand of plug,so use what the book says to use for that engine.

[Log in to Reply]  [No Email]

03-14-2002 09:30:41

Report to Moderator
 Re: Re: Re: Re: need hotter spark in reply to JEB, 03-14-2002 05:59:43  

My farmall B would only run on 1 cylinder until I switched to D21's. There was a post a while back that said the No foul plugs that are sold in JC Wittney do the same thing as what you are doing by holding the plug wire away from the spark plug. I also heard of taking a blown fuse and putting inline to do the same thing.

Good Luck

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

Hop to:

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 Engine Rebuild Kit - by Curtis Von Fange. I always liked engine rebuild kits. They have all the replacement parts for overhauling an engine without going to the store to get gaskets, special measuring tools, or miscellaneous parts. They come neatly packaged, clean and tidy. But it's important not to let that packaging lull you into a false sense of security. The appearance of matching sleeves, pistons, rings, and bearings can cause frustration and agony if not properly measured and installed in a workshop environment. Following c ... [Read Article]

Latest Ad: ford 9n -8n- naa -600-800- 2000-4000 tractors massey fergurson to20 - 35 - 40 -50 -85 - 235 tractors international - 436 eng -706 block and head gas -300 u -464 gas - 240 tri - a - b - bn - 140 -tractors [More Ads]

Copyright © 1997-2020 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