OEM 2002 Buick LeSabre Fuel Pressure Regulator

2002 Buick LeSabre Fuel Pressure Regulator Parts and Q&A

• Q: How to service and repair the fuel pressure regulator on 2002 Buick LeSabre?

  A: The first step to service or repair the fuel pressure regulator is to remove fuel pressure and then wipe off the retaining ring from dirt contamination. Detach first the pressure regulator vacuum hose followed by removing its snap ring. The fuel pressure regulator should be detached from its housing by lifting it while twisting it using a shop towel to catch any leaking fuel. The service sequence requires removal of the regulator O-ring small, regulator filter screen and both regulator O-ring large and regulator O-ring back up. Apply a cover to the fuel pressure regulator housing to stop outside materials from contaminating it. The technician must install fresh O-rings to the fuel pressure regulator if they do not use a new regulator. After this, a small amount of clean engine oil should be used to lubricate these O-rings. Fit the fuel pressure regulator with these items in this order: regulator back up O-ring, regulator O-ring large, regulator filter screen, and regulator O-ring small. The fuel pressure regulator requires housing inside it while using the snap ring to secure it in place. Use a tachometer to inspect for fuel leaks after connecting the vacuum hose to the fuel pressure regulator while starting the ignition for 10 seconds then turning it off to inspect the fittings for gas leakage before repeating. The last installation task involves fitting the fuel injector sight shield.