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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Engine Control System - 3.8L - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Pressure Relief Procedure >> Tools Required

Tools Required

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

J 34730-1A  Fuel Pressure Gage

    Fig 1: Identifying Fuel Pressure Gauge J 34730-1A
    GM180378Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.
  3. Loosen the fuel filler cap to relieve tank vapor pressure.
  4. Connect the J 34730-1A  to the fuel pressure connection. Wrap a shop towel around the fuel pressure connection while connecting the fuel pressure gauge in order to avoid spillage.
  5. Install the bleed hose into an approved container and open the valve to bleed the system pressure. The fuel connection is now safe for servicing.
  6. Drain any fuel remaining in the fuel pressure gage into an approved container.
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