Air Pump
- Start engine and run until normal operating temperature is reached. Check all hoses and connections for possible leaks. Replace as necessary and/or tighten connections.
- Listen for excessive noise at air pump. Replace air pump if noise is excessive. Check drive belt tension. Disconnect hose from air pump outlet and attach a suitable pressure gauge. See Fig 1.
Courtesy of MAZDA MOTORS CORP.
- Connect a tachometer to engine and run engine at 1500 RPM. Note pressure reading. Pump must show a pressure of at least 1.0 psi (0.68 kg/cm2
). If less, replace pump.