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Home >> Mazda >> 2000 >> B3000 SX, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - System & Component Testing) >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) System >> System Check (Except Miata, MPV & Protege)

System Check (Except Miata, MPV & Protege)

WARNING: This page is about a different car, the 2000 Mazda Protege, 2000 Mazda Millenia, 2000 Mazda MX-5 Miata, 2000 Mazda MPV, and 2000 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

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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