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Fuel Systems: Notes

Basic diagnosis of fuel system should begin by checking fuel pump operation and fuel pressure.

WARNING: ALWAYS release fuel pressure before disconnecting fuel injection-related component. DO NOT allow fuel to contact engine or electrical components.
CAUTION: When battery or ECM is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until adaptation systems have completed a relearn cycle. See 2002 COMPUTER RELEARN PROCEDURES or 2003 COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.