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Home >> Chevrolet >> 1981 >> Corvette Standard Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> DELCO-REMY Electronic Spark Timing (Est) Ignition System >> Testing >> Intermittent Operation Check

Intermittent Operation Check

  1. Connect spark tester to 2 different spark plug wires. If no spark, proceed to Ignition System Check . If spark on either or both wires, check for dwell increase from low to high RPM.
  2. Check pick-up coil with ohmmeter. Replace if faulty. If pickup coil is good and dwell did not increase, replace HEI-EST module. If good, but dwell did increase, check fuel system spark plug wires, distributor cap and plugs.
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