[AT] Firing on two instead of four

[George Willer]

Yoda,

Here's your next step... exchange the plugs of the non-running cylinders
with the running ones to see if the trouble follows along.  It may work, I
think it will.

Here's the theory.  Pulling the wire away from the plug forced the coil to
build to a higher voltage before it fires.  That points to a fouled plug
even though they're relatively new.

As you may know, a plug under compression needs higher voltage to fire, so
the test with them laying down outside isn't conclusive.

George Willer

> Hey,
>     I was playing a short time today with my Case SC which I got at the
> end
> of the summer.  It had sat for a few years.  I couldn't get it to fire
> at
> first when I picked it up in August, but just put in four new plugs and
> it
> ran great.
>     Anyway, lately it has been running on just two cylinders.  So I took
> the
> plugs out and cleaned them and laid each individually down and turned
> the
> engine over.  Had strong spark in all four.  But still only running on
> two.
> Had a new spark plug wire which I tried and still the two would not fire
> 
> when tractor was running.  Even switched the good wires to the bad plugs
> and
> vice-versa....same results.
>     My last test was I pulled the wire to the plugs which were not
> firing
> off the distributor cap while the tractor was runnining.  As I held it
> about
> 1/2 inch from the distibutor, it arced and fired.  Did the same with the
> 
> other wire which wasn't firing.  Cleaned the contacts and reconnected
> the
> wires.  Same old thing.
>     Suggestions???  Is the distributor bad?  Tried to look close for
> cracks
> or wear.  Looking for the next step.
> 
>     Thanks.  I don't contribute much anymore, but still lurk.
> 
> Tim Nobles
> tnobles at netsync.net
> 
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> Remembering Our Friend Cecil Monson 11-4-2005
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