S10/T10 P/U 2WD V6-262 4.3L VIN W CPI (1992)
Fuel Pressure Release: Service and Repair
Fuel Supply System CMFI
FUEL PRESSURE RELEASE PROCEDURE
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Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.
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Loosen fuel filler cap to relieve tank vapor pressure
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Connect fuel pressure gauge to fuel pressure connection tap. Wrap a shop towel around fitting while connecting gauge to avoid spillage.
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Install bleed hose into an approved container and open valve to bleed system pressure. Fuel connections are now safe for servicing.
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Drain any fuel remaining in gauge into an approved container.