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March 25, 2017 at 9:27 pm
#54881
A good coil will normally show 4,500 to 6000 ohms (4.5 k to 6 k) across the secondary. I have seen coils that put out a good spark and are apparently OK that show an open (no continuity) when checked with an VOM. Remember that even an old style VOM is only putting out 1.5 volts, if there is a dirty or poor connection at the secondary winding the meter will show an open. Also any break in the fine secondary winding, the spark will jump (for a while !) but the meter will show open circuit.
Joe B