Posted by Unruh on October 21, 2008 at 14:32:53 from (69.77.248.142):
In Reply to: positive ground posted by Don c on October 21, 2008 at 10:14:05:
My mechanic explained to me that the difference is the way the spark jumps the gap, but I've forgotten which way it is. One way the spark jumps from the electrode of the spark plug to the ground and the other way, the other way around. He showed me, too, by shorting a spark plug with a screw driver that you could see which way the spark would jump.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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