[AT] Electrical Problems..Please help

[Ken Knierim]

Yeah, one side of the points should always be at ground voltage and
the other should go up to near battery voltage when the points are
open and go to ground voltage when they're closed. I worked on a
forklift recently that had the wire from the mounting plate (which was
tied to a broken vacuum advance assembly) to ground broken off.

We replaced it with a piece of Solder-Wick and a couple of crimp
terminals. Between that, fixing the vacuum advance and freeing up the
centrifugal advance, the forklift went from barely running because of
"a bad carburetor" to purring and reliable.

As Farmer says... check the grounds. :)

Ken in AZ

On 7/30/06, Phil Auten <pga2 at hot1.net> wrote:
> Joe,
> If I read correctly you are getting 11.5V at the points when they are open.
> What happens when they close? Does the voltage drop to zero? Or does
> it change at all? The points should short the coil terminal to ground. If it
> doesen't, there's a problem with the points. New or not, there may be some
> corrosion on the points causing your lack of spark.
>
> Phil
>
> At 07:38 PM 7/29/2006, you wrote:
> >I'm completely stumped on this one.  I have a Case 430 CK gas engine that has
> >been very reliable for me over the past seven years or so.  Never had a
> >problem starting it in any kind of weather, that was until two weeks ago.  I
> >started it up to move some gravel and it started fine.  I shut it
> >off to talk to the
> >neighbor, and it didn't want to start right away, I turned the key and
> >nothing, after I fiddled with the wire from the battery to the key
> >switch, it fired
> >right up and I was off again.
> >
> >While back in the gravel pit I stalled it out, turned the key and nothing
> >again.  I fiddled with it for about a half an hour then gave
> >up.  The next day I
> >took the key switch out of the dash and cleaned up the connections, now it
> >turns over just fine, but has no spark.  Since then I have replaced the coil,
> >condensor, and points... still no spark.  I have tested things with
> >my multimeter
> >and am getting plenty of current through the switch, coil, condensor, and
> >points.  The funny thing is I have voltage going to the points, but
> >when I break
> >them, there is no spark jump.  This should mean something right?  I should
> >have said that it is a 12 volt system.  I'm getting 11.5 volts between the
> >ignitions wire to the key swith and the points if that helps at all.
> >
> >Please tell me it's something simple, I'm lost on this one.  Thanks for your
> >help.
> >
> >Enjoy, Joe
>
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