Maxima SE V6-3.5L (VQ35) (2002)
Fuel Pressure: Testing and Inspection
Fuel Pressure Check
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When reconnecting fuel line, always use new clamps.
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Make sure that clamp screw does not contact adjacent parts.
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Use a torque driver to tighten clamps.
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Use Pressure Gauge to check fuel pressure.
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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 tube joint between fuel damper and injector tube and set fuel pressure check adapter (J44321).
3. Install pressure gauge to the fuel pressure check adapter as shown in the figure.
4. Start engine and check for fuel leakage.
5. Read the indication of fuel pressure gauge.
At idling: Approximately 350 kPa (3.57 kg/sq.cm, 51 psi)
6. If results are unsatisfactory, go to next step.
7. Check the following.
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Fuel hoses and fuel tubes for clogging
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Fuel filter for clogging
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Fuel pump
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Fuel pressure regulator for clogging
If OK, replace fuel pressure regulator.
If NG, repair or replace.