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Fuel Pressure Regulator: Testing

WARNING: This page is about a different car, the 2001 Acura NSX-T, 2001 Acura NSX, 2000 Acura NSX-T, and 2000 Acura NSX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Attach the fuel pressure gauge (07406-0040002), or equivalent to the service port of the fuel filter. See Fig 1 .
    Fig 1: Testing Fuel Pressure
    G00107036Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Pressure should be 47-53 psi (323-363 kPa) with the regulator vacuum hose disconnected and pinched.
  3. Reconnect the vacuum hose to the pressure regulator.
  4. Check that the fuel pressure rises when the vacuum hose from the fuel pressure regulator is disconnected again.
  5. If the fuel pressure does not rise, replace the fuel pressure regulator.
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