Relieving Fuel Pressure (Fuel Injection)
WARNING: This page is about a different car, the 1989 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.
Remove negative battery cable. Loosen fuel tank filler cap. Place clean shop rag around fuel filter. Slowly loosen 6mm service bolt on top of fuel filter (one complete turn) to relieve system pressure. Always replace washer under 6mm bolt after loosening.