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Home >> Mercury >> 1983 >> Capri Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - DURA-Spark II >> Testing >> Start Circuit Check
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Start Circuit Check

  1. Connect spark tester or modified spark plug between ignition coil wire and a good engine ground. Crank engine with ignition switch.
  2. If no sparks occur at tester gap, proceed to step 3. If sparks occur at tester gap, proceed to Run Circuits Check.
  3. If no sparks occurred in step 1, remove coil wire from distributor cap and ignition coil. Connect ohmmeter leads to both ends of coil wire and measure resistance.
  4. If resistance is more than 5000 ohms per inch, replace coil wire. Also inspect ignition coil for damage or carbon tracking. Crank engine to verify distributor rotation and proceed to Voltage Supply Circuits Check.
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