[Farmall] Farmall 340 Not starting

[Larry Hardesty]

Roger, Yes I mean the "Secondary cable," as the IH Blue Ribbon Manual calls
it, that runs from the center of the coil to the center of the distributor.


I checked the coil (so I thought) by
1) Pulling the secondary cable out of the center of the socket of the
distributor and slipping the rubber nipple back from the terminal.  I then
put it within 1/8 to 3/16 inch of frame of tractor (I think a couple
places..oil filter and somewhere else).  Each time I then cranked the
tractor with the ignition switch on.  I did not see a spark between the
cable terminal and the frame.

2) I tried the way the IH Blue Ribbon Manual recommends by pulling the
secondary cable out of the center of the socket of the distributor and
slipping the rubber nipple back from the terminal.  I then put it within 1/8
to 3/16 inch of the distributor primary terminal. I then cranked the tractor
with the ignition switch on.  Again I did not see a spark between the cable
terminal and the primary terminal.   

Both results lead back the faulty coil, but I just put a new one on.  I am
heading to the Case-IH dealer this afternoon to see what they say and if
they can test the coil. If not them, then an electrical shop.  I suppose the
new coil could be bad, but it also leads to the question as to why should it
be bad...bad to start with or something wrong with tractor wiring to make it
go bad....or is there something entirely somewhere else creating this
result.

Still puzzled in Nebraska

Thanks

Larry

-----Original Message-----
From: farmall-bounces at lists.antique-tractor.com
[mailto:farmall-bounces at lists.antique-tractor.com] On Behalf Of Roger Moffat
Sent: Wednesday, July 26, 2006 12:21 PM
To: Farmall/IHC mailing list
Subject: Re: [Farmall] Farmall 340 Not starting


On Jul 26, 2006, at 12:11 PM, Larry Hardesty wrote:

> Bigdog.  Should I not get a spark when I take the main wire running  
> from
> the coil to the distributor and put the distributor end near a  
> ground, such
> as frame of the tractor or the + wire on the side of the  
> distributor and
> then crank the tractor?  I am not.   So it would appear no voltage is
> running from the coil to the distributor.  Don't know why or the  
> remedy...or
> am I doing some faulty thinking.

What do you mean by the "main wire" - the high tension "fat" wire  
that goes from the centre of the coil to the centre of the  
distributor, or the wire that goes from the side of the coil to the  
side of the distributor?

If it's the high tension "fat" wire you're talking about, then there  
probably wouldn't be a spark when you put that by the + wire on the  
side of the distributor as that is only to earth when the points are  
closed. When the points are open that is not to earth.

But there should be a spark from the end of the fat wire to any  
proper ground on the tractor when it is cranking, or when you open  
and close the points with a screw driver.

Roger
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