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Home >> Hyundai >> 1992 >> Excel GL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> Testing EGR Valve >> Fuel Injected Models (Ported EGR Valve)
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Fuel Injected Models (Ported EGR Valve)

  1. Disconnect Green-striped vacuum hose from throttle body and connect vacuum pump to hose end. Plug throttle body nipple. With engine temperature, 140°F (60°C) or less and engine idling, apply vacuum to hose. If idle speed does not change and vacuum leaks down from EGR solenoid, system is functioning properly.
  2. With engine temperature 185-205°F (85-95°C) and engine idling, apply 2 in. Hg to hose. If idle does not change, and vacuum holds, system is functioning properly.
  3. Apply 6.8 in. Hg. If vacuum holds and idle becomes unstable or engine stalls, EGR system is functioning properly.
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