Precautions for Fuel System Service

Be sure to take the following precautions whenever working on the fuel system.

• Disconnect the negative cable from the battery.
• Do not smoke, and place no smoking signs near working area.
• Have CO2 fire extinguishers handy.
• Perform service operations only in a well-ventilated area away from any open flames such as gas water heaters.
• Wear safety glasses.
• Be sure to remove the fuel filler cap from the fuel filler neck to relieve the fuel tank of fuel vapor pressure, and then reinstall the cap.
• Before loosening or disconnecting the fuel feed line, be sure to relieve the fuel system of fuel pressure by following the FUEL PRESSURE RELIEF PROCEDURE .
• When disconnecting a fitting on the fuel line, cover the fitting with a shop cloth to soak up the small amount of fuel that may flow out from the disconnected fuel line. Put the used cloth in an approved container.
• Never run the engine with the fuel pump relay disconnected when the engine and exhaust system are hot.
• Since fuel hose connections vary with the pipe type, connect and clamp each hose using the correct method for each specific connection. See FUEL HOSE DISCONNECTING AND RECONNECTING . After connecting a hose, check that there is no twist or kink in the hose.
• When installing an injector or a fuel feed pipe, lubricate its O-rings with gasoline.
• Handle the fuel tank carefully. Do not allow it to touch sharp edges or hot surfaces. Do not drop it. If the tank is dropped, the tank and all components on and in it should be replaced because they may have been damaged.