LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 1985 >> Wagoneer Base, 2.1 B, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - HEI >> Overhaul >> Reassembly >> Reading Scope Primary Pattern:
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Reading Scope Primary Pattern:

  1. A)

    Spark Zone - spark plug arcing.

  2. B)

    Coil and Condenser Zone

  3. B1)

    Firing Zone - no plug arc.

  4. C)

    Dwell Zone - displays current through coil primary with module turned on.
scientia non olet · About LEMON Manuals