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Home >> Mazda >> 1982 >> B2000 Base >> Repair and Diagnosis >> Engine Performance >> Emissions >> EGR Function Testing - MAZDA >> EGR Function Testing - MAZDA >> Test 2 >> Rotary Engine
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Rotary Engine

Check vacuum hose routing. Disconnect EGR valve hose. Connect vacuum pump to EGR valve. Idle engine and apply 15 in. Hg. EGR valve stem/diaphragm should move and engine speed should drop at least 100 RPM or engine should stall.