[AT] Firing on two instead of four

[Kevin]

I think Lew is right or close, since you are getting fire a t all 4 plugs. 
Just maybe at the wrong time, Spray some silicone lube on the cap. It could 
be cracked and firing across the cracked cap ? And I have bought new plugs 
that wernt as good as the ones they replaced.
 We have to run hotter plugs to get some of these old tractors to run on 
this new gas. What gas was 50 year ago (unless its a all fuel) is not the 
same thing we are buying today.
Stay with it it cant be much wrong with all that spark you have.
Kevin Mosier
----- Original Message ----- 
From: "Tim Nobles" <tnobles at netsync.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Saturday, November 25, 2006 6:48 PM
Subject: [AT] Firing on two instead of four


> 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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