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Home >> Ford >> 1987 >> Bronco 5.8 H >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - DURA-Spark II >> Testing >> Run Circuit

Run Circuit

  1. Remove ignition coil wire from distributor cap, and install spark tester on wire. Turn ignition switch from "RUN" to "OFF" position. Spark should occur at tester gap each time switch goes from "RUN" to "OFF" position.
  2. If spark occurs, check distributor cap, adapter, and rotor for damage or wear. Check for roll pin retaining reluctor to sleeve in distributor shaft.
  3. Verify Orange and Purple wires are not crossed between distributor and control module. If no sparks occurred in step 1), proceed to CONTROL MODULE VOLTAGE test.
Fig 1: Schematic of Dura-Spark II Ignition System (Typical)
G16042Courtesy of FORD MOTOR CO.
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