[AT] fixing a spark plug

[Brian]

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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