Wednesday, December 18, 2013
How to Replace 7 3 Injectors
The 7.3-liter Ford Power Stroke engine is an eight-cylinder diesel engine with fuel injection. Its most common on larger Ford vehicles made from 1995 to 2002, such as 3/4-ton and full-ton pickup trucks. Each cylinder of this engine has a fuel injector that delivers fuel to the cylinder in a precise amount and timing sequence. The replacement of the fuel injector in a 7.3-liter engine requires you to disassemble the fuel rail assembly on top of the engine.
Instructions
- 1
Place an oil drain pan under each oil drain and open the drain plug with a socket wrench. Allow the oil to drain into the drain pan and replace the drain plug. This will prevent oil from entering the combustion chamber while you replace the fuel injectors.
2Remove the valve cover with a socket wrench, and detach the electrical connectors from the fuel injectors. Remove the drain plugs on the oil rail and fuel rail. Disconnect the retaining screw for the oil deflector and remove the oil deflector. Remove the retaining bolt for the fuel injector.
3Place the fulcrum of injector remover No. T94T-9000-AH1 below the hold-down plate of the fuel injector. Fasten the remover screw into the hole in the fuel injector plate, and tighten the screw to remove the fuel injector from the injector bore. Discard the copper washer.
4Clean the injector bore of any debris with rotunda injector sleeve brush 104-00934-A and a clean shop towel. Lubricate the new fuel injectors with clean engine oil and mount a new copper washer onto the injectors.
5Push the fuel injectors gently into the injector bore to seat the O-rings. Place the open end of injector replacer No. T94T-9000-AH2 between the hold-down plate and the fuel injector. Fasten the tool to the cylinder head with the retaining bolt from the tool kit. Tighten the bolt to completely seat the fuel injector and disconnect the tool from the cylinder head.
6Install the oil deflector and tighten the mounting bolt to 108 inch-lbs. with a torque wrench. Tighten the fuel rail drain plugs to 96 inch-lbs. and tighten the oil rail drain plug to 53 inch-lbs. Connect the wiring harness for the fuel injectors and install the valve cover.
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