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Home >> Ford >> 1978 >> Fiesta >> Repair and Diagnosis >> Engine Performance >> Ignition System >> MOTORCRAFT DURA-Spark & Solid State Ignition >> Testing >> Ignition Coil Test

Ignition Coil Test

  1. With ignition off, check secondary resistance between coil "DEC" (negative) terminal and coil tower. See Figure and Figure. Resistance should be between 7000-13, 000 ohms.
  2. Check primary resistance between "BAT" (positive) and "DEC" (negative) coil terminals. Resistance should be 1.13-1.23 ohms (.71-.77 ohms Dura-Spark I ignition system). If resistance is not within specifications, replace ignition coil.
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