B4000 4WD V6-4.0L OHV (1995)
Fuel Pressure: Service Precautions
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.
