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Run Pick-Up Coil Advance Timing Test (1976-77 Dual Pick-Up Distributor Models)

  1. Start engine. Wait 90 seconds and disconnect start pick-up coil lead. If engine continues to run, reconnect start pick-up coil lead and go to START TIMER ADVANCE TIMING TEST.
  2. If engine stops, reconnect start pick-up coil lead. Turn ignition off and disconnect 8-pin connector from Spark Control Computer. Check resistance between terminals No. 3 and 5 at 8-pin connector. If resistance is 150-900 ohms, go to step  5. If not, go to next step.
  3. Measure resistance at distributor run pick-up coil leads. If run pick-up coil resistance is 150-900 ohms, check for open, shorted or poor connection between distributor and terminals No. 3 and 5 of 8-pin connector.
  4. If wires are okay and resistance is still not within specifications, replace run pick-up coil and repeat step  1. If engine still fails to run, go to next step.
  5. Connect one lead of ohmmeter to ground, and with other lead check for continuity at each terminal of leads going into distributor. If continuity exists at any lead, replace run pick-up coil and repeat step  1. If engine still fails to run, go to next step.
  6. Remove distributor cap. Check run pick-up coil air gap and adjust if necessary. Install distributor cap, reconnect all wiring and try to start engine. If engine fails to start, replace Spark Control Computer.
  7. If, after installing new computer, engine still fails to start, install original Spark Control Computer and repeat test sequence (one of the steps was probably improperly performed or false readings were obtained).
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