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Fuel Pressure Regulator: Installation

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  1. To install, reverse removal procedure using NEW "O" ring. Coat "O" ring with gasoline before installing fuel pressure regulator in fuel rail.
  2. Ensure fuel pressure regulator rotates smoothly in fuel rail after installation to verify proper seating of "O" ring and fuel pressure regulator fits flat against the fuel rail. If fuel pressure regulator does not rotate smoothly, check for improper "O" ring installation.
  3. Use NEW gaskets when installing fuel return line union bolt. Tighten bolts and fuel return line-to-fuel pressure regulator union bolt to specification. See TORQUE SPECIFICATIONS . Operate fuel pump and check for fuel leaks. See FUEL PUMP OPERATION under FUEL SYSTEM in BASIC TESTING - 2.2L article.
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