GM 89017530
Fuel Pressure Regulator

A proper fuel pressure regulator replacement on VIN 1 requires the first step to be fuel pressure relief followed by cleaning up the retaining ring of the fuel pressure regulator. First detach the vacuum hose from the pressure regulator before taking off its snap ring. Secure the spillage of fuel with a shop towel as you twist up and detach the fuel pressure regulator from its housing. The procedure requires removal of the regulator O-ring small followed by complete removal of regulator filter screen and then removal of regulator O-ring large and regulator O-ring back up. Cover the fuel pressure regulator housing while performing the process to prevent fuel contamination. The installation should use newly installed O-rings on the fuel pressure regulator that must receive light lubrication by clean engine oil. Insert first the regulator back up O-ring followed by both regulator filter screen and regulator O-ring large and finish with regulator O-ring small. The installation requires placing the fuel pressure regulator inside its housing after which you must fasten it with the snap ring . Drive the vacuum hose to the fuel pressure regulator before putting the fuel injector sight shield into place. To check for fuel leaks begin by turning the ignition ON for 10 seconds followed by turning it OFF then turning it ON again for another 10 seconds while examining for any signs of leakage.

The first step for servicing or repairing the Fuel Pressure Regulator requires relief of fuel pressure. Examine and wipe out all dirt from the Fuel Pressure Regulator retaining ring after removing the Fuel Rail. First separate the snap ring from the housing before turning the Fuel Pressure Regulator with a shop towel underneath to remove it from its housing. Service the Fuel Pressure Regulator by first removing the small o-ring of the pressure regulator and the filter screen and two large o-rings as well as the back up o-ring. Apply a protective covering to the Fuel Pressure Regulator housing for the purpose of contamination prevention. The installation process requires avoiding compressed air tests or cleans on the Fuel Pressure Regulator and excludes solvent bath immersion. Place new o-rings on the Fuel Pressure Regulator before applying light clean engine oil to them. Install the storage o-ring first followed by the largest o-ring followed by the filter screen and finishing with the smallest o-ring. The Fuel Pressure Regulator should be placed inside its housing then secured through use of the snap ring. The operator must inspect for fuel leaks after installing the Fuel Rail by engaging the ignition for two seconds followed by two seconds of disengagement then re-engaging the ignition to check for fuel leaks.

The replacement of the Fuel Pressure Regulator begins with draining the fuel pressure. Before beginning the operation remove the Fuel Rail then clean all dirt remaining on the Fuel Pressure Regulator retaining ring. The first step entails removing the snap ring while catching spilled fuel using a shop towel before lifting and twisting the Fuel Pressure Regulator to separate it from the Fuel Pressure Regulator housing. First remove the pressure regulator small o-ring and then the pressure regulator filter screen before taking off the pressure regulator large o-ring and finally the pressure regulator o-ring back up. Place protective material around the Fuel Pressure Regulator housing in order to stop contamination. Use compressed air neither to clean nor test the Fuel Pressure Regulator during installation and maintain the pressure regulator out of solvent baths. Place new o-rings on the Fuel Pressure Regulator before applying clean engine oil for light oiling and installing pressure regulator o-ring back up followed by pressure regulator large o-ring and pressure regulator filter screen and finally pressure regulator small o-ring . Return the Fuel Pressure Regulator into the Fuel Pressure Regulator housing and fasten it with the snap ring. Check for fuel leaks after reinstalling the Fuel Rail by first turning on the ignition for 2 seconds, then waiting for 10 seconds with the ignition off followed by another 2-second on cycle.

Prior to Fuel Pressure Regulator service you need to drain fuel pressure then operate in a clean environment for working with fuel system components. The first step should be to clean the retaining ring from contaminations before you pull out the vacuum line attached to the pressure regulator. After removing the snap ring, use a shop towel to collect spills from fuel and uninstall the Fuel Pressure Regulator from the Fuel Pressure Regulator housing while twisting and lifting it. The regulator o-ring small needs removal along with regulator o-ring large and regulator o-ring back up from the Fuel Pressure Regulator housing . You should cover the opening to prevent contamination during this process. New o-rings should be placed on the Fuel Pressure Regulator while light engine oil acts as lubricant for these rings. Place the Fuel Pressure Regulator into the Fuel Pressure Regulator housing then fasten it with the snap ring. Install the regulator back up o-ring followed by the regulator o-ring large and regulator o-ring small. Finally, reconnect the vacuum line to the Fuel Pressure Regulator and fix the fuel fill cap followed by reconnecting the negative Battery Cable. Check for fuel leakage by turning the ignition on for two seconds followed by turning it off for ten seconds before checking fuel leaks while the ignition remains on. Install the fuel injection sight shield as the last step.

Cover it to prevent contamination.

Cover the fuel pressure regulator housing to prevent contamination.

Cover it to prevent contamination.

Turn the ignition ON for 2 seconds, OFF for 10 seconds, then ON again to check for fuel leaks.