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Home >> Mazda >> 1994 >> RX-7 Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Air Injection >> Port Air & Split Air Check Valves

Port Air & Split Air Check Valves

  1. Operate engine at idle. Disconnect hose between air pump and air control valve. See Figure . Ensure exhaust gas is not leaking from port air check valve. If exhaust gas is leaking, replace air control valve.
  2. Disconnect hose from split air check valve. See Figure . Increase engine speed to 2000 RPM and verify exhaust gas is not leaking from split air check valve. If valve is not working correctly, replace split air check valve.
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