[AJD] Another Plea For Education

[Terry L. Hrdlicka]

Cal,

One of the symptoms could be:

  "the tractor will run for about 30 minutes great, then it dies as if 
it ran out of gas. I restart it and it restarts fine and runs for about 
5 minutes then does the same thing.
If I let the tractor sit for about an hour, it will run for another 30 
minutes before repeating the cycle above."

:)

A lot of the time, if there is a weird deviation from specs in the coil 
resistance, it indicates a problem in the windings.  Sometimes after 
running a while, the coil will warm up and the wires in the coil will 
expand a little, and either open up or short out.  After things cool 
down, the wires return to their normal position, at least for a while. 
I've seen this kind of intermittent operation a few times on old cars in 
the past.  We'd run it 'till it quit, cool the coil down with ice and 
see if she'd start.  One of the "low tech" diagnostic tools from the 
"good 'ol days."  Learnt' that one from dad :).

Terry



wb5cys wrote:
> Man, am I learning a lot about engines from this list.
> 
> Here's my next question.  What would be the symptoms of a coil with incorrect resistance value?  This is regards a 12 volt conversion.
> 
> Thanks.
> 
> Cal Barton
> Nacogdoches, Texas
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