LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Isuzu >> 1998 >> Oasis LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Fuel System >> Fuel Pressure >> Basic Diagnosis
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Basic Diagnosis

Begin basic diagnosis of fuel system by determining fuel system pressure. If fuel pump fails to run, inspect power supply to PGM-FI main relay. If all power supplies are present (i.e., battery, ignition and starter switch during cranking), perform functional test of main relay. See WIRING DIAGRAMS and SYSTEM/COMPONENT TESTS articles.

scientia non olet · About LEMON Manuals