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Fuel Pressure Regulator

  1. Remove intake air sensor and air cleaner assembly. Connect Fuel Pressure Gauge (P378) to injector supply line. Detach vacuum hose which connects air distributor and pressure regulator. Connect plug to removed intake air sensor.
  2. Turn on ignition. Slightly open stator flap by hand until pump contacts close and read fuel pressure shown on pressure gauge. If pressure is not 28-31 psi (1.97-2.18 kg/cm2 ), replace fuel pump.
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