[Farmall] Down hill foul

[soffiler at ct.metrocast.net]

Hi Frank:

What do the fouled plugs look like?  Dry carbon fouling or
wet oily fouling?

Running downhill, using engine compression to control speed,
you run the engine in a unique mode:  relatively high
manifold vacuum combined with relatively high RPM. 
(Normally, you only have high manifold vacuum at low idle. )
 I think the high vacuum/high RPM is pulling oil into the
cylinders, probably past valve seals.

Best regards, 
Steve O.


----- Original Message Follows -----
From: Frank DeWitt <Frank at lbpinc.com>
To: farmall at lists.antique-tractor.com
Subject: [Farmall] Down hill foul
Date: Thu, 07 Dec 2006 23:14:24 -0500

>Hi all
>
>I have a 200 that always runs great,  EXCEPT  (You knew
>that was  coming)  when I drive it to the parade
>
>The route from my house to the parade is about 2 miles. 
>The first  1/3 mile is down hill and two years running now
>it has fouled a plug  on the down hill run.
>I run it in gear to control the speed.  I have no way to
>trailer  it.  Short of shutting off the gas and going down
>hill in gear with  the engine spinning but not firing (That
>would be trickery) what can  I do?  Hotter plugs? colder
>plugs?  other?
>
>Thanks
>
>Frank DeWitt
>
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