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Home >> Isuzu >> 1987 >> Trooper II Base, 4D Utility, 2.3 L >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> EGR Function Testing - Diesel >> Component Testing >> EGR Valve
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EGR Valve

Using vacuum pump, check vacuum diaphragm operation. Diaphragm should not "leak down" and should move to full up position at about 11.8-15.8 in. Hg. See Figure .

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