[AT] Spark Plug Fouling Ferguson TO20

[John Hall]

Going by your annual useage, you get 3/4 of the year before you foul the 
plug. I would just change it and be done with it, they are less than $3 
at NAPA.  FWIW, if you could run the splitter with something else it 
may help--engines that are in poor shape run better under heavier load, 
not piddling.

John Hall


On 6/23/2019 6:29 PM, Szakaluk wrote:
> Request advice or suggestions on what I can do to reduce fouling on #4 
> spark plug on my 1951 Ferguson TO-20, here or to me direct.
>
> I've had it since 1990, only use it 8 or 10 hours a year. Field 
> mowing, snow removal, wood splitting (auger).
>
> Using 10W30 oil, Champion D21 plugs, which I understand is a hot plug 
> for this application.
>
> At first, I could go twenty or 25 hours between plug 
> fouling/cleaning.  Only #4 is a problem, others are fine. Using very 
> little oil.
>
> Now I need to clean #4 every six or seven hours.
>
> Appreciate your suggestions on how I can reduce this issue.  I know 
> someday the engine should be worked on, but with this limited annual 
> use I can't justify tearing it down.
>
> Heavier oil?
> Different plugs?  If so, on all cylinders, or just #4?
> Oil additives?
> Other thoughts?
>
> Thanks in advance
>
> Steve Zakaluk
> szakaluk at aol.com
> Falcon, CO
>
>
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