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Home >> Buick >> 2003 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures - 3.1L >> Fuel Systems >> Notes
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Fuel Systems: Notes

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

WARNING: High fuel pressure may be present in fuel lines and component parts. ALWAYS release fuel pressure before disconnecting any fuel injection-related component. DO NOT allow fuel to contact engine or electrical components.