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Home >> Oldsmobile >> 1991 >> Custom Cruiser >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Basic Fuel System Checks (A7) >> Fuel System Pressure Test >> Fuel Pressure Relief (TBI)
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Fuel Pressure Relief (TBI)

Disconnect negative battery cable. Remove fuel filler cap. Since these TBI units contain an internal bleed-down feature, after a short time, system fuel pressure should dissipate.

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