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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 7.4L V8 - VIN [N] >> Removal & Installation >> Fuel Pressure Release

Fuel Pressure Release

These engines use the model 220 TBI system. This system contains an internal constant bleed feature that relieves system pressure when ignition switch is turned OFF.

Before beginning work of fuel system components, disconnect negative battery cable and loosen fuel tank cap to relieve tank pressure. No further pressure relief is required.