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Home >> Mitsubishi >> 1990 >> Precis Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - PFI >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) System >> EGR Valve
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EGR Valve

  1. Remove EGR valve. Check valve for sticking, carbon deposits and damage. Clean with solvent if necessary. Apply 19.8 in. Hg to valve diagphragm. If valve does not hold vacuum, replace valve.
  2. Apply specified vacuum to valve diaphragm. See CLOSED IN. HG in EGR VALVE SPECIFICATIONS  table. If valve begins to open below specification, replace valve.
  3. Apply specified vacuum to valve diaphragm. See OPEN IN. HG in EGR VALVE SPECIFICATIONS  table. If valve is not completely open at or above specification, replace valve.
    EGR VALVE SPECIFICATIONS

    Application Closed: In. Hg Open: In. Hg
    Precis 1.0 3.3
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