200SX L4-1998cc 2.0L DOHC MFI (SR20DE) (1995)
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Fuel Pressure Regulator: Testing and Inspection
FUEL PRESSURE REGULATOR CHECK
1. Stop engine and disconnect fuel pressure regulator vacuum hose from intake manifold.
2. Plug intake manifold with a rubber cap.
3. Connect variable vacuum source to fuel pressure regulator.
4. Start engine and read indication of fuel pressure gauge as vacuum is changed.
NOTE: Fuel pressure should decrease as vacuum increases. If results are unsatisfactory, replace fuel pressure regulator.