[AJD] sparkplugs- problem - moisture

[Terry Hrdlicka]

Krieg,

I've brought some "dead" plugs back to life by laying them on the wood stove 
in the garage and getting them REALLY hot.  I take 'em off after they quit 
smoking for a while, let 'em cool, clean and gap.  Sometimes it works, 
sometimes not.
YMMV

Wonder if a guy could take a new pair of D23's to a pottery shop and have 
them brush glaze up inside and around the insulator, then fire the plugs 
along with their pots?

Just some thoughts.

Terry Hrdlicka
Crete, Nebraska


----- Original Message ----- 
From: "kreig" <astroguy at nas.com>
To: "Antique John Deere mailing list" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Saturday, November 18, 2006 4:07 PM
Subject: Re: [AJD] sparkplugs- problem - moisture


> It appears that some problems come from moisture in the unglazed ceramic 
> insulators of spark plugs.
>
> So, what would happen if we put the spark plugs in a low temperature oven 
> for a few hours?  I am thinking around 200 degrees. Would this drive out 
> the moisture and a make a "bad" plug good again?
>
>
> Kreig
>
>
> ----- Original Message ----- 
> From: "wwwayne johnson" <wjohnson at bigriver.net>
> To: "Antique John Deere mailing list" 
> <antique-johndeere at lists.antique-tractor.com>
> Sent: Friday, November 17, 2006 7:01 PM
> Subject: Re: [AJD] sparkplugs- problem - failures - maintenance - 
> newtechnology
>
>
>> Duane's response was outstanding.  I use AC 86's as they tend to foul 
>> less but are short hex nut so its hard to get them out if a shield is 
>> used such as the "G".  But a little lacquer thinner and a blow out brings 
>> most back to life.  We just don't work them hard enough.  My 420 with 
>> thermostat control and H10 or H12 seldom fouls a plug and it uses a bit 
>> of oil and is rather tired.
>> Merle Wayne
>> ----- Original Message ----- 
>> From: <astroguy at nas.com>
>> To: <antique-johndeere at lists.antique-tractor.com>
>> Sent: Thursday, November 16, 2006 8:52 PM
>> Subject: [AJD] sparkplugs- problem - failures - maintenance - new 
>> technology
>>
>>
>>> Seems like a lot of problems with JD tractors, comes from troublesome
>>> sparkplugs.
>>>
>>> So my questions are:
>>>
>>> 1)     Why do spark plugs go bad?
>>>
>>> 2)     Why do spark plugs go bad so fast in JD tractors?
>>>
>>> 3)     Is there a way to do some kind of preventive maintenance for 
>>> plugs?
>>>
>>> 4)     Are there new technology sparkplugs that eliminate the need to
>>> purchaseng new plugs ever year? Bosche now produces Platinum Ir Fusion
>>> plugs made up of platinum and Iridium.  Reading the literature, sounds 
>>> like
>>> a great spark plug.
>>>
>>> Any thoughts??
>>>
>>> Thanks, Kreig
>>>
>>>
>>>
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>>
>>
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