Ford F3TZ-9002-L Fuel Tank Assembly

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It should be flushed out with hot water and detergent or, preferably, sent to a radiator shop for chemical flushing.

The fuel tanks in these vehicles, constructed of either metal or plastic, are positioned either midship, between the driveline and frame rail, or aft-axle, situated between the frame rails and behind the rear axle. Optional auxiliary tanks, usually located in the alternative midship position, may be present. Plastic tanks, if damaged, are generally non-repairable and should be replaced. For midship tanks on fuel-injected models, fuel system pressure must be relieved before disconnecting the battery and draining fuel. The tank is lowered after removing hoses, filler pipes, and electrical connectors, with the fuel level sending unit/fuel pump and vapor control valve removed if replacing the tank. The process for aft-axle tanks involves draining fuel, disconnecting hoses and electrical connectors, and lowering the tank while supporting it, with additional steps for metal or plastic tanks. Bronco models follow a similar procedure with specific steps for their configuration, including the removal and installation of the vapor emissions control valve for tank replacement. In all cases, proper precautions, such as resetting the inertia switch on fuel-injected models, should be observed during installation.

The in-tank Fuel Delivery Module (FDM) integrates reservoir functions, including a venturi jet system, into a single unit.