Fuel Pressure Relieving

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Honda S2000, 2004 Honda S2000, 2003 Honda S2000, 2002 Honda S2000, and 2001 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.

Before disconnecting fuel lines or hoses, release pressure from the system by loosening the fuel pulsation damper on top of the fuel rail.

Make sure you have the anti-theft code for the radio, then write down the frequencies for the radio's preset buttons.
Disconnect the negative cable from the battery.
Remove the fuel fill cap.
Remove the intake manifold cover (A).

Fig 1: Removing Intake Manifold Cover With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE: The illustration shows 2000-2003 models.
Use a wrench on the fuel pulsation damper (A) at the fuel rail.

Fig 2: Removing Fuel Pulsation Damper With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Place a rag or shop towel (B) over the fuel pulsation damper.
Slowly loosen the fuel pulsation damper one complete turn.
NOTE: Replace all washers whenever the fuel pulsation damper is loosened or removed.