5.24v after the ballast resistor (should be the same as the coil + terminal) is too low.
With the distributor cap off, turn the engine over until the points are closed. With the key still on .....
... measure coil + to ground. Should be around 8.5 to 9.5 volts.
... measure coil - to ground. Should be zero volts.
Then turn the engine over until the points are open. With the key still on ....
... measure coil + to ground. Should be battery voltage.
... measure coil - to ground. Should be battery voltage.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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