Yeld, you state: "if I put a small piece of wood between the contact points I have power to positive side of the coil and the negative side. But if I remove the wood chip no power to the negative side of the coil"
FYI THATS EXACTLY HOW IT SHOULD BEHAVE IE the points must be working and doing their job
A) If the points are open (wood between them) and the coils LV Primary is continuous, you read the same voltage on the coils output (to distributor) as the input (from ignition switch)
B) HOWEVER if the points are closed that takes the coils output to ground (so it can conduct current) so there's no voltage
To find the cause of no spark if you work through my Ignition troubleshooting Procedure linked below it can help find the problem
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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