Distributor Pick-Up Coil
- Connect external vacuum source to vacuum advance unit. If vacuum advance unit is inoperative, replace unit. To check pick-up coil for shorts, connect the ohmmeter leads as shown by meter "A" in Fig 1.
- Set on middle scale of meter. Operate vacuum advance through range. Reading should be infinite at all times. If not, replace pick-up coil.
- To check pick-up coil resistance, connect ohmmeter leads as shown by meter "B" in Fig 1. Again use the middle scale. Operate vacuum advance through its range. Ohmmeter reading should be 500-1500 ohms in all advance positions. If readings are not as specified, replace pick-up coil.