V 1500 P/U 4WD V8-350 5.7L (1987)
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If the vehicle is equipped with a fuel module, the module must be disconnected before performing the fuel system pressure test. Refer to
SECTION 4 of the Fuel and Emissions Manual.
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Fuel system is under pressure. To avoid fuel spillage, refer to procedures in SECTION 4 for testing or making repairs requiring disassembly of
fuel lines or fittings.
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On V6 or V8 engines, the fuel pressure drops to almost zero psi after pump shuts "OFF".