LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 1986 >> Galant >> Repair and Diagnosis >> Engine Performance >> System >> EGR System - Gasoline >> System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

System Testing

  1. Cold start engine and run at idle until normal operating temperature is attained. Remove Green-striped hose from injection mixer and connect vacuum pump to hose end. Disconnect solenoid valve connector and apply 3.9 in. Hg of vacuum. If idle becomes unstable or engine stalls, system is okay.
  2. Reconnect solenoid valve connector and apply 3.9 in. Hg of vacuum. If engine performance remains stable (no stall or rough idle) the negative chamber of EGR valve is open to atmosphere and EGR is okay. If unstable idle occurs, solenoid valve is staying closed and must be replaced.
scientia non olet · About LEMON Manuals