OEM Buick Rainier Fuel Pressure Regulator

Buick Rainier Fuel Pressure Regulator Parts Questions & Experts Answers

• Fuel Pressure Regulator
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  Q: How to replace the fuel pressure regulator on Buick Rainier?

  A: A proper replacement of the Fuel Pressure Regulator requires relief of fuel system pressure. The first step includes taking apart both the air cleaner outlet resonator and the engine wiring harness from the front engine retaining clips. The first step should be to disconnect the Fuel Pressure Regulator vacuum line along with cleaning both the regulator and its surrounding area of dirt. Strip away the fuel return pipe retainer while you disconnect its pipe then detach the Fuel Pressure Regulator retainer before extracting the unit. Examine the filter screen on the regulator because any contaminants require replacing the Fuel Pressure Regulator. Begin Fuel Pressure Regulator installation by putting the regulator filter together with a new o-ring on the Fuel Pressure Regulator followed by o-ring lubrication with clean engine oil. Place the Fuel Pressure Regulator into the regulator housing of the Fuel Rail before installing the Fuel Pressure Regulator retainer tight to 8 n.m (71 lb in). The installation process requires installation of the fuel return pipe retainer followed by a tightenance of the return pipe retainer screw to 8 n.m (71 lb in) and the connection of the fuel return pipe and Fuel Pressure Regulator vacuum line. Check for fuel leaks through the ignition cycle by first turning on the battery for two seconds followed by switching it off for ten seconds before repeating the on state to detect any fuel leakage. Reinstall the negative Battery Cable while inspecting for the presence of leaks. Since the last step involves securing the engine wiring harness into retention clips at the engine front while reinstalling the air intake resonator.