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Home >> Oldsmobile >> 2003 >> Silhouette GL >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Fuel Systems >> Fuel Control >> Sequential Fuel Injection System
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Sequential Fuel Injection System

Sequential Fuel Injection (SFI) injectors are pulsed sequentially in spark plug firing order. Constant fuel pressure is maintained to the injectors. Air/fuel mixture is regulated by amount of time injector stays open (pulse width). Various sensors provide information to the PCM to control pulse width.

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