Re: SPARK PROBLEMS, I dare you to explain this one!
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Posted by Glenn Simpson on June 23, 1998 at 19:12:50:
In Reply to: SPARK PROBLEMS, I dare you to explain this one! 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. Just to keep this seemingly endless thread going, JR2 is quite correct. Every spark plug has a designed spark gap inside the top portion which enhances the spark as he suggests. The differences in plug design in this area may prove to be the deciding factor.
'Don't forget to post the answer when (if) you find it. I'm sure we would all love to hear.
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