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Home >> Mazda >> 1990 >> RX-7 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Air Pump
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Air Pump

  1. With engine at normal operating temperature, inspect all hose connections and belt tension.
  2. Stop engine. Disconnect line from air pump to air control valve at the valve. Install Pressure Gauge Set (49 2113 010B) to the line. See Fig 1 . Connect tachometer to engine.
  3. Start engine. Operate engine at idle and note pressure reading. Reading should exceed 1.7 psi (.12 kg/cm2 ). Replace pump if not within specification.
Fig 1: Checking Air Pump Operation
G93893Courtesy of MAZDA MOTORS CORP.