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Home >> Oldsmobile >> 1990 >> Toronado Base, 440T4/ME9 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Basic Testing >> Basic Fuel System Checks >> Fuel System Pressure Test (EFI) >> Notes
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Fuel System Pressure Test (EFI): Notes

CAUTION: Fuel system trouble shooting and diagnosis begins with checking fuel injection system pressure. High fuel pressure may be present in fuel lines and component parts. Relieve fuel pressure before disconnecting any fuel system components.
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