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Mazda
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1986
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RX-7 Base, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Air Management System
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System Testing
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Exhaust Gas RECIRCULATION (EGR) Control System
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EGR Valve Inspection
EGR Valve Inspection
Warm up engine and run at idle. Disconnect the vacuum hoses from the EGR solenoid valve.
Apply vacuum to the EGR valve with a vacuum pump. The engine should run rough or stall.