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Home >> Opel >> 1976 >> Opel Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emissions System - Exhaust Gas RECIRCULATION >> Testing >> EGR Valve >> 1976-78 Models

1976-78 Models

Apply vacuum to EGR valve diaphragm. The diaphragm should move to full up position when 8 in. Hg of vacuum is applied and should not leak down. If not, replace EGR valve.

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