Fuel System Pressure Release
WARNING: This page is about a different car, the 1994 Honda Prelude. However, it is still accessible from the selected car via links, so may be relevant.
Remove negative battery cable. Loosen fuel tank filler cap. Locate 6-mm service bolt on fuel rail. Place clean shop rag around service bolt. To relieve system pressure, slowly loosen service bolt one complete turn. Always replace washer under 6-mm service bolt after loosening.