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Home >> Mazda >> 1997 >> 626 LX, 2.0 C, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 2.0L >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) System >> System Check
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System Check

Check all connectors and vacuum hose routing. Check for cracks, leakage and restrictions, and repair as necessary. Start engine and operate throttle. Diaphragm of EGR control valve should not move while engine is cold. Warm engine to operating temperature. Increase engine speed to about 2000 RPM, EGR control valve diaphragm should move. If no movement is detected, check EGR system components.

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