Don't overlook calibrating your dwell meter, if it requires it. Most dwell meters, especially those that are battery-operated, require the meter circuit to be adjusted/calibrated to a "Set" line before using it. Some meter instructions specify connecting the leads together to calibrate the instrument. That won't hurt, even if yours doesn't require that step. If your meter has a black bar at the end of the scale, the pointer should rest in that bar when you turn on the ignition switch and close the points before starting the engine. The pointer resting in the black bar indicates a satisfactory level of distributor resistance, which if too high (pointer below the bar- in the numbers) will cause the dwell reading to be incorrect. And don't forget to select the correct dwell scale for the measurement- if your instrument has multiple scales.
Harvester
