Posted by Bob N.Y. on November 23, 2021 at 14:06:20 from (154.27.215.209):
I am still working on the 1930 Model A Ford doodlebug that I am trying to resurrect after it sat outside in the elements for 20 years. I did some preliminary checks today in hopes of trying to start the engine tomorrow. I think there is a problem with the spark. It was originally a 6 volt positive ground system, but was converted to 12 volt negative ground before I ever saw it. I am staying with the 12 volt negative ground. Question 1: With the key on but engine not running, should the voltage on the distributor side of the coil be the same as the battery side? Question 2: If the voltage on the dist. side is considerably lower than the batt. side, does that mean the coil is hooked up backwards? Question 3: Is there a difference between a coil designed for positive ground and one designed for negative ground? Thank you.
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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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