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Home >> Honda >> 1985 >> Prelude Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Component Testing >> EGR Valve

EGR Valve

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  1. Start engine. Disconnect vacuum hose from EGR valve. Connect a vacuum pump to EGR valve.
  2. Apply 6 in. Hg to EGR valve. Ensure vacuum holds steady. Engine should die. If vacuum does not hold, replace EGR valve. If engine does not die, check EGR valve and ports for blockage.
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