B4000 4WD V6-4.0L OHV (1995)
Fuel Pressure Release: Service Precautions
WARNING: Adhere to the following procedures any time the fuel system is being worked on in order to reduce the risk of fire and personal
injury:
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Keep a dry chemical (Class B) fire extinguisher near the work area.
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Place a "CAUTION FLAMMABLE" sign in the work area.
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Work in a well-ventilated area. Do not smoke, and keep sparks and open flames away.
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Wear eye protection.
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Use caution when working near the catalytic converter to prevent the possibility of burns or fire. (The temperatures within the converter can
exceed 537 degrees C (1000 degrees F).)
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Relieve the fuel system pressure prior to disconnecting fuel system components.
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Disconnect the negative battery cable except for tests where battery voltage is required.
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Use a suitable container to store or catch fuel.
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Do not replace fuel pipe with fuel hose.
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Plug all disconnected fuel line fittings and hoses.
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After making any fuel system repairs ALWAYS inspect for fuel leaks.
WARNING: Fuel in the fuel system remains under high pressure when the engine is not running.
WARNING: Use a rag for protection from fuel spray when disconnecting the hoses.
SST Fuel Gauge With Pressure Release Hose
Fuel Pressure and Servicing Fuel System Releasing
Before disconnecting any fuel line release the fuel pressure from the fuel system to reduce the possibility of injury or fire.
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Connect the SST to the fuel pressure relief valve (Schrader valve) located on the fuel distribution pipe.
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Place the SST drain hose in a suitable container.
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Depress the pressure relief button until the pressure is released.
Alternate method
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Disconnect the inertia fuel shutoff switch.
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Crank the engine for 15 to 20 sec. to relieve the pressure.
NOTE: When inspecting the fuel system, use the SST.
