LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 1980 >> Prelude Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition Timing Control System >> Testing >> Civic 1300
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Civic 1300

  1. Begin test with cold engine. Disconnect vacuum hose from distributor advance unit, connect to vacuum gauge, and start engine.
  2. Vacuum should be present. If not, check vacuum hoses for leaks or poor connections. If still no vacuum, proceed to next step.
  3. Check for voltage at ignition solenoid valve with ignition "ON". If no voltage, check wiring connections and thermosensor for continuity. Repair wiring or replace thermosensor.
  4. When voltage is present, draw a vacuum (with hand pump) on advance hose. If gauge will not hold vacuum, check for vacuum leak between distributor advance and intake manifold. If gauge holds vacuum, replace ignition solenoid valve and recheck.
  5. Warm engine to normal operating temperature. No vacuum should be present on advance hose. If vacuum is present, check thermosensor for continuity. If continuity is shown, replace thermosensor. If not, replace ignition solenoid valve.
  6. Attach vacuum pump to distributor advance diaphragm, start engine, and pull 6 in. (150 mm) Hg vacuum. Timing should advance. If not, or if vacuum leaks down, replace vacuum advance diaphragm.
scientia non olet · About LEMON Manuals