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Home >> Mazda >> 1986 >> RX-7 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Management System >> System Testing >> Exhaust Gas RECIRCULATION (EGR) Control System >> EGR Valve Inspection
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EGR Valve Inspection

  1. Warm up engine and run at idle. Disconnect the vacuum hoses from the EGR solenoid valve.
  2. Apply vacuum to the EGR valve with a vacuum pump. The engine should run rough or stall.
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