SPARK PROBLEMS, I dare you to explain this one!
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Posted by Joe Brown on June 20, 1998 at 18:45:06:
Farmall Cub 48. New coil in mag,condenser, points,cap,rotor,wires,plugs and carb, timed on the money. This thing just keeps running rough. I pulled the wire from the coil while it was running to look at the spark. If I pull the wire out till I have a 1/2" spark jumping from the coil to the wire the engine runs smooth as silk. If I move the wire into the coil and make connection it runs rough again. I tried widening the spark gap but this didn't help. I've been told I need to add a resistor on my plugs. Can anyone back this up and or explain to me whats happening. Thanks in advance.
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