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 tachometer to engine and run engine at 1500 RPM. Note pressure reading. Pump must show a pressure of at least 0.6 psi (.04 kg/cm2
) for GLC and 1.0 psi (.07 kg/cm2
) for all other models. If less, replace air pump.