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Home >> Mercury >> 1991 >> Grand Marquis LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Fuel System >> Fuel Pressure Release >> 1.8L
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Fuel Pressure Release: 1.8L

Depress retaining clips and remove rear seat cushion. Disconnect fuel pump connections. Start engine and operate until it stalls. Turn off ignition and reconnect fuel pump. Install rear seat cushion.