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Air Pump

  1. Start and run engine until normal operating temperature is reached. Check all hoses and connections for possible air leaks. Replace as necessary and/or tighten connections.
  2. Listen for excessive noise at air pump. If noisy, check mounting bracket, retaining bolts and drive belt for proper tension.
  3. Disconnect hose from air pump outlet and attach a suitable pressure gauge to outlet. Connect a tachometer to engine. See Fig 1.
  4. Run engine at 1500 RPM and note pressure gauge. Pump must show a pressure of at least 1.0 psi (.07 kg/cm2 ). If less, replace pump.
Fig 1: Checking Air Pump Pressure Output
G09309984Courtesy of MAZDA MOTORS CORP.
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