The first step for replacing the Fuel Pressure Regulator involves draining fuel system pressure. First disconnect the vacuum hose of the Fuel Pressure Regulator then sweep dirt away from the retainer along with the surrounding area. Begin by taking off the Fuel Pressure Regulator retainer before proceeding to detach the Fuel Pressure Regulator. Always verify the fuel rail includes no pieces of the back up ring , regulator seal o-ring , regulator filter , and regulator seal o-ring . Verify that the newly purchased Fuel Pressure Regulator retainer matches its designation by checking the tab position for the retention of the e85-straight vacuum port retainer. The procedure requires installing the back up ring and regulator seal o-ring alongside the regulator filter and regulator seal o-ring onto the Fuel Pressure Regulator but first proper lubrication of all o-rings (11, 13) using clean engine oil before fitting the Fuel Pressure Regulator. New o-rings along with a fresh retaining clip need to be used during any reinstallation process. Next install the new Fuel Pressure Regulator retainer followed by reconnecting the Fuel Pressure Regulator vacuum hose before putting on the fuel fill cap. Follow the above
Battery Cable reconnection procedures and inspect for fuel leaks by applying this protocol: turning on the ignition while keeping the engine off for 2 seconds followed by a 10-second period where you turn it off afterward and proceed to turn it on again with the engine off before inspecting for any fuel leaks.