[AT] IH H4 Magneto-no spark

[Doug Tallman]

Al, Did you clean the new points good. Maybe even some real fine sand 
paper. They can get a film just from setting. Get the ohm meter out. You 
should have somewhere in the 5-10K ohms through the secondary to ground. 
Usually 1-2 ohms through the primary. Make sure none of the wires are 
touching the case. Doug T.



Al Jones wrote:
> Started tinkering on the white Super A this afternoon.  Magneto impulse clicks when you hand crank the engine, was hoping I could just rub the points a little and make fire.  When I got the breaker cover off, I saw the leaf spring on the moving point had broken.  I had a new point and condenser set lying around, so I went ahead and took the mag off and replaced all that.  Condenser was tricky but I got it.  Had a time getting the screw loose on the stationary point but I got that apart and since I couldn't find my feeler gauge anywhere, I used a piece of the cardboard boxtop to set the points.  Backwoodsy-hillbilly but the points connect and break so I felt like that was in the ballpark.
>
> Long story short I still have no spark.  The inside of the distributor cap looks pretty corroded, so I tried pulling the wire from the coil cover to the dist. cap and trying to get a spark from there (trying to arc it off the side of the engine block) but still no spark.  The connection in the coil cover looks pretty good, and the inside "tab" that touches the coil itself is bright, shiny copper. (The coil cover could be original.  It has the old IHC trademark instead of the IH "man on a tractor" logo)  I did knock the glaze off the dimple on the coil, and on the rotor button.
>
> The only thing I can think of is the coil itself.  Looks like given the condition of everything that I could get some spark from the coil terminal.  What else should I look for?  
>
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