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Home › GMC › 1982 › S15 Pickup 2.8L Eng VIN B, Automatic Trans › Repair and Diagnosis › Engine Performance › Ignition System › DELCO-REMY HEI-Est Ignition System › Testing › Intermittent Operation Check

Intermittent Operation Check

  1. Connect spark tester to 2 different spark plug wires, and crank engine. If no spark, perform IGNITION SYSTEM CHECK . If spark occurs at either or both wires, check for dwell increase from low to high RPM.
  2. Check pick-up coil. Replace, if faulty. If pickup coil is good and dwell did not increase, replace HEI-EST module. If good, but dwell increased, check fuel system spark plug wires, distributor cap and plugs.
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