nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Fuel Pressure Release > < Special Tools - Fuel Pressure Gauge Kit|Page 7313
Page 1
background image

Fuel Pressure: Testing and Inspection

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger. See: Fuel Filter/Fuel Pressure Release

Note:

-

When reconnecting fuel line, always use new clamps.

-

Make sure that clamp screw does not contact adjacent parts.

-

Use a torque driver to tighten clamps.

-

Use Pressure Gauge to check fuel pressure.

-

Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate false readings.

1. Release fuel pressure to zero. 

 

2. Disconnect fuel hose between fuel filter and fuel tube (engine side).

3. Install pressure gauge between fuel filter and fuel tube.
4. Start engine and check for fuel leakage.
5. Read the indication of fuel pressure gauge.

At idling:

With vacuum hose connected 
Approximately 235 kPa (2.4 kg/sq.cm, 34 psi)
With vacuum hose disconnected 
Approximately 294 kPa (3.0 kg/sq.cm, 43 psi)

If results are unsatisfactory, perform Fuel Pressure Regulator Check. 

Fuel Pressure Release > < Special Tools - Fuel Pressure Gauge Kit|Page 7313