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

Shop Now

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

Ford 9N, 2N & 8N Discussion Forum
:

Fouled plug

Welcome Guest, Log in or Register
Author 
CT8N

05-26-2005 08:08:01




Report to Moderator

My 47 8N with front distributor mount keeps fouling the number 2 plug. Autolite 437 doesn't help. Number 2 has a bright blue spark. I did a compression test with the following results.#1 dry 90,wet 100 #2 dry 100, wet 100 #3 dry 100, wet 100 #4 dry 110, wet 110.It has some blowby and exhaust smoke and uses about a quart of oil a day. I just finished the Marvel oil treatment and it didn't help. Do I have valve problems?
Thanks for your help, you all got my hydraulics working fine, now if I could reduce the spark plug changing .
Charles

[Log in to Reply]   [No Email]
Dell (WA)

05-26-2005 13:47:22




Report to Moderator
 Re: Fouled plug in reply to CT8N, 05-26-2005 08:08:01  
CT8N..... ....yer compression readings are just fine, just a normal worn engine. ...but... yer fouling of #2 sparkie is indicative of BAD IGNITION WIRING. new soft flexable copper-core sparkie wiring is $10 (cheap) DO NOT USE modern anti-radiostatic carbon-core wires. Carbon-core is kinda GLASS like and will crack and cause intermittant sparkies and fouling of sparkies.

As for your using 1-qt of oil a day and having "blow-by", that seems excessive and NOT SUPPORTED by yer good compression readings. DO NOT OVERFILL yer oilpan. 6-qts max with filter change. Overfill of oilpan will cause BLOW-BY and excessive oil consumption. Infact, you could probably gitt-by with just 5-qts.

Check that yer 12" oilpan dip-stick is still "calibrated" and that the cap hasn't slipped.

Also TOO THIN oil will cause excessive oil consumption.

Me? I think I'd change oil to 6-qts heavy 40wt or 50wt detergent for summertime and check the dip-stick calibration at the same time..... ..respectfully, Dell, yer self-appointed dippy

[Log in to Reply]  [No Email]
Russ SoCal

05-26-2005 13:55:08




Report to Moderator
 P/N 2N 12426 in reply to Dell (WA), 05-26-2005 13:47:22  
Dell,
Is this P/N "adapter" the extender I'm looking for?
Russ



[Log in to Reply]  [No Email]
Dell (WA)

05-26-2005 14:10:10




Report to Moderator
 Re: P/N 2N 12426 in reply to Russ SoCal, 05-26-2005 13:55:08  
Russ..... ....the p/n for the sparkie anti-fouling extender is 2N-12426. The still sell the equivalent at the autoparts stores "help" carrasells. but that is really a desperation move and needs HOT SPARKIES to fire the sparkplug up inside the extender..... ..Dell



[Log in to Reply]  [No Email]
denny(ny)

05-26-2005 13:09:57




Report to Moderator
 Re: Fouled plug in reply to CT8N, 05-26-2005 08:08:01  
No change between readings indicates burnt valve.

Denny



[Log in to Reply]  [No Email]
CT8N

05-26-2005 13:16:55




Report to Moderator
 Re: Fouled plug in reply to denny(ny), 05-26-2005 13:09:57  
I wonder how I could have good compression readings with a burnt valve?
Charles



[Log in to Reply]  [No Email]
Russ SoCal

05-26-2005 13:51:15




Report to Moderator
 Re: Fouled plug in reply to CT8N, 05-26-2005 13:16:55  
CT,
You don't. You have good compression. The "no change" twixt wet and dry indicates that while the valves are doing a good job, the compression rings are doing a REAL good job. However, the OIL CONTROL ring on #2 may not be doing so good. First thing I would try is an extender on number 2. May be enough to ease the fouling problem.
Russ



[Log in to Reply]  [No Email]
Rob

05-26-2005 09:09:32




Report to Moderator
 Re: Fouled plug in reply to CT8N, 05-26-2005 08:08:01  
I can"t figure that blow-by and it doesn"t sound like valves.
Check that plug wire; bend it and replace if you see surface cracks. Check the distributor cap for cracks. Check the points gap on the cylinder"s lobe.
If all the plugs were fouling I"d say check the coil wire, ignition voltage, and the fuel-mix (too rich) but it isn"t all the plugs.
I understand the autoparts guys have an anti-foul devices to add on the plug.

[Log in to Reply]  [No Email]
Bob

05-26-2005 08:11:22




Report to Moderator
 Re: Fouled plug in reply to CT8N, 05-26-2005 08:08:01  
Valve problems are NOT indicated by those compression readings. It sounds like you may have stuck/worn/damaged oil control ring(s).



[Log in to Reply]  [No Email]
Ed in ON

05-26-2005 09:15:15




Report to Moderator
 Re: Fouled plug in reply to Bob, 05-26-2005 08:11:22  
Umm. I thought that matchin dry and wet compression readings *did* indicate valves as the problem, since the wet reading should have better ring sealing caused by the liquid.



[Log in to Reply]  [No Email]
Bob

05-26-2005 10:27:08




Report to Moderator
 Re: Fouled plug in reply to Ed in ON, 05-26-2005 09:15:15  
ED,

I though his compression readings were reasonable, with the possible exception of #1, which I would re-check after running a few hours.

If the compression readings are reasonable, and the valves and compression rings are in good condition, you would NOT expect to see a big difference in the dry and wet readings.



[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