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Home >> Mazda >> 2007 >> B3000 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 620 (EGR Function Testing - MAZDA) >> EGR Function Testing - MAZDA >> Test 4 >> EGR Valve
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EGR Valve

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Warm engine to normal operating temperature and operate at idle. Disconnect and plug vacuum hose at EGR control valve. Connect vacuum pump to EGR control valve, and apply 1.5-3.5 in. Hg vacuum. Engine should run rough or stall. If engine does not operate as specified, clean or replace EGR control valve.

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