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Fuel Pressure Regulator: Replacement

WARNING: Compressed natural gas is flammable and highly explosive. You could be killed or seriously injured if leaking natural gas is ignited.
Stop the engine, and keep heat, sparks and flames away.
  1. Relieve fuel pressure (between the engine and the manual shut-off valve) (see Relieving between the engine and the manual shut-off valve ).
  2. Disconnect the vacuum hose, fuel pipes and heater hoses. Disconnect the connectors from the fuel pressure regulator.
  3. Remove the bolts and the fuel pressure regulator.
    Fig 1: Removing Bolts & Fuel Pressure Regulator
    G02510991Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Apply PAG oil to a new O-ring, and carefully install it into its proper position.
  5. Install the fuel pressure regulator in the reverse order of removal. Be careful not to deform any of the lines, and assemble them securely when you assemble the heater hoses.
  6. Perform the leak inspection procedure (see Leak Inspection ).
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