[AT] [External] Re: fixing a spark plug

[Robert Steckelberg]

Used to have this problem with older snowmobiles.  The the left cylinder which was closest to the fan would foul once in a while.  I changed that plug in that cylinder to the next hotter heat range and that fixed the problem.

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________________________________
From: AT <at-bounces at lists.antique-tractor.com> on behalf of Gunnells, Brad R <brad-gunnells at uiowa.edu>
Sent: Monday, May 30, 2022 1:25:42 PM
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Subject: Re: [AT] [External] Re: fixing a spark plug

My old Allis WC doesn't really get run long and hard enough. So, it will often foul #4. I keep an old pill bottle that is just the right size to put a plug in. I fill it with Simple Green and let the plug soak. It cleans off the oil/carbon after a while. The next time it happens I grab the one that's been soaking and take the compressor and blow it off. Put it in the tractor and take the one removed and put it in the bottle for next time.

As Farmer would say...."I'm frugal".  Hahaha

Brad
________________________________
From: AT <at-bounces at lists.antique-tractor.com> on behalf of Brian <lesh at kci.net>
Sent: Monday, May 30, 2022 9:51 AM
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Subject: [External] Re: [AT] fixing a spark plug

If you have good spark going to ground it's probably bad plug.  If you
can't see good spark going to ground it's probably bad test and is
probably bad plug.  If you grabbed old plug out of toolbox and got no
spark then its probably bad plug.  Throw the old plugs in toolbox out.
They will never get better.  Dad always had an old set of plugs for the
Allis C in the toolbox buried in the dirt at the bottom.  Tractor would
start missing and would try all the plugs in the toolbox before sending
me to shop to get a new one (1).  Usually fixed the problem and back to
cultivating corn I went. Dad wasn't  cheap just wanted to get his
money's worth. After all plugs were probably like 50 cents apiece.

Brian CO




On 2022-05-30 06:00, Stuart Harner wrote:
> Mike,
>
> How did the plugs that won't spark look? Wet? Oily? Sooty?
>
> How is the gap?
>
> Do you have another engine you can hook the plugs to for an external
> test?
>
> Is the spark with the screwdriver consistent? IF so, you might have
> gotten a bad plug. Rare but it does happen especially if someone
> dropped it. You could try a plain J19LM to get the resistor out of the
> circuit to see if that helps.
>
> Let us know what you find.
>
> Good luck,
>
> On 5/29/22 15:22, Mike M wrote:
>> Hey all, I'm trying to get a mower running so I can give it to my
>> sister
>> who is going through a messy divorce. I have a briggs and stratton 6.5
>> hp, parts store gave a Champion RJ19LM. After filling with oil and
>> fuel,
>> it started after 2 pulls. After sitting for a while I tried it again
>> and
>> it wouldn't even sputter. Pulled the plug and no spark, tried another
>> plug, no spark. Tried the old phillips in the spark boot, and got a
>> nice
>> hot  blue spark. Any thoughts?
>>
>> Best regards,
>> Mike M
>>
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