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Home >> Mazda >> 1987 >> RX-7 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Component Testing >> Intake Manifold Check Valve
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Intake Manifold Check Valve

Disconnect the air hose at the air control valve. Connect a tachometer to the engine. Start the engine. Disconnect the connector from air switching solenoid valve. Increase engine speed to 1500 RPM. Watch for exhaust leak. If leak exists, replace check valve.

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