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Home >> Isuzu >> 2004 >> Axiom Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Information & Procedures >> On Vehicle Service >> Fuel Metering System >> Fuel Pressure Relief Procedure
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Fuel Pressure Relief Procedure

CAUTION: To reduce the risk of fire and personal injury, there are necessary to relieve the fuel system pressure before filler and gauge unit servicing The fuel system components.
CAUTION: After relieving The system pressure, a small amount of fuel may be released when servicing fuel lines or connections. Reduce the chance of personal injury by covering The fuel line fittings with a shop towel before you disconnect the fittings. The towels will absorb any fuel that may leak out. When the disconnect is completed, place the towel in an approved container.
  1. Remove the fuel cap.
  2. Remove the fuel pump relay from the underhood relay box. Refer to Fuel Pump Relay  .
    Fig 1: Removing Fuel Pump Relay From Underhood Relay Box
    G02788916Courtesy of ISUZU MOTOR CO.
  3. Start the engine and allow it to stall.
  4. Crank The engine for 30 seconds.
  5. Disconnect the negative battery cable.