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Home >> Buick >> 1991 >> LeSabre Base, 4T60/ME9 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Basic Testing >> Basic Fuel System Checks (A7) >> Fuel System Pressure Test >> Fuel Pressure Relief (PFI)
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Fuel Pressure Relief (PFI)

Fuel system is under pressure. Pressure must be relieved prior to servicing fuel system. Fuel pressure may be relieved by using one of the following methods.