Fuel Pressure Release: Sonata

On Sonata 2.4L, disconnect fuel pump harness connector located in trunk. On Sonata 2.5L, disconnect fuel pump harness connector located under rear seat. On all models, start engine and allow to idle. After engine stalls, turn ignition off. Disconnect negative battery cable. Reconnect fuel pump harness connector. When repairs are complete and fuel lines are properly secured reconnect negative battery cable. Using fuel pump check terminal connector, activate fuel pump and check for leaks. Repair as necessary. See FUEL PUMP TEST .