nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Fuel Pump > < Fuel Pressure Regulator|Locations
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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.

Fuel pressure should decrease as vacuum increases. If results are unsatisfactory, replace fuel pressure regulator.

Fuel Pump > < Fuel Pressure Regulator|Locations