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Home >> Saturn >> 2003 >> L300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION >> Exhaust System Check - Parked
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Exhaust System Check - Parked

  1. Remove oxygen sensor.
  2. Insert Exhaust Back Pressure Adapter (SA9306E), from Gauge Bar Set, into exhaust manifold. The thread designation is M18 x 1.50.
  3. Connect Gauge Bar Set, 0-60 in. H2O (0-15 kPa) gauge to back pressure adapter.
  4. With engine at normal operating temperature, observe exhaust back pressure at 4000 RPM.
  5. The exhaust back pressure must be less than 20.13 in. H2O (5.0 kPa).
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