Relieving Fuel Pressure
Fuel pressure can be released at either the fuel supply line at the fuel rail or at the fuel filter. Position shop towel around fitting to protect against fuel spray. Carefully loosen fitting. When fuel pressure has been released, tighten fitting.
CAUTION:
DO NOT
pinch or clamp fuel lines during the FUEL PRESSURE CHECK. Fuel lines on vehicles equipped with the Advanced EVAP system will be damaged if pinched or crushed, causing fuel or vapor leaks.