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Home >> Suzuki >> 1993 >> Samurai JA >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) >> EGR Modulator

EGR Modulator

  1. For EGR modulator location, see appropriate vacuum diagram in VACUUM DIAGRAMS article. Remove upper cap from modulator. Remove filter and clean with compressed air. Reinstall filter and upper cap. Remove EGR modulator.
  2. Using low air pressure, apply air to one upper vacuum hose port and plug opposite vacuum hose port. Air should flow freely through filter housing.
  3. Connect hand-held vacuum pump to one upper vacuum hose port. Connect vacuum gauge to opposite vacuum hose port. Using low air pressure, apply air to bottom port while applying vacuum with vacuum pump. Vacuum should be indicated on gauge. When low air pressure application stops at bottom port, vacuum gauge indicator should return to zero. Replace EGR modulator if operation is not as specified.
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