Removal & Installation4.6L & 5.4L SOHC Engines
Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and can be ignited. Failure to follow these instructions can result in personal injury.
Fuel in the fuel system remains under high pressure even when the engine is not running. Before working on or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved. Failure to follow these instructions can result in personal injury.
Relieve the fuel pressure.
Remove the fuel pulse damper, as follows:
Disconnect the vacuum hose.
Remove the snapring.
Remove the fuel pulse damper.
Fig. Disconnect the vacuum hose (1), remove the snapring (2), then remove the fuel pulse damper (3)
Remove and discard the fuel pulse damper O-ring seals.
Use O-ring seals that are made of special fuel resistant material. Use of ordinary O-ring seals can cause the fuel system to leak. Do not reuse the O-ring seals.
Lubricate the new O-ring seals with clean engine oil to aid installation.
Installation is the reverse of the removal procedure.