LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 1987 >> Chevette 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Ignition System - HEI >> Testing >> Intermittent Problems
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Intermittent Problems

  1. Attach spark tester, in turn, to 2 different spark plug wires. Crank engine. If there is no spark, repeat SYSTEM VOLTAGE CHECK with modified spark plug.
  2. If spark occurs from one or both wires, check pick-up coil resistance for 500-1500 ohms. See Figure (B). If resistance is incorrect, replace pick-up coil. If resistance is okay, check for dwell increase from a high to low RPM.
  3. If dwell increases, check fuel system, spark plug wires, distributor cap and spark plugs. If no increase occurs, replace electronic module.
scientia non olet · About LEMON Manuals