Oil Pressure Check

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Be careful not to burn yourself, as engine oil may be hot.
Oil pressure check should be done in "Neutral position" (M/T models) or "Parking position" (A/T models).

Check oil level. Refer to OIL LEVEL .
Remove undercover with power tool.
Disconnect oil pressure switch harness connector.
Remove oil pressure switch.

Fig 1: Locating Oil Pressure Switch
Courtesy of NISSAN MOTOR CO., U.S.A.
Install oil pressure gauge and hose (SST).

Fig 2: Locating Oil Pressure Gauge & Hose
Courtesy of NISSAN MOTOR CO., U.S.A.
Start engine and warm it up to normal operating temperature.

Check oil pressure with engine running under no-load.

NOTE: When engine oil temperature is low, engine oil pressure becomes high.

Engine oil pressure [Engine oil temperature at 80°C (176°F)]

ENGINE OIL PRESSURE

Engine speed rpm	Approximate discharge pressure kPa (kg/cm2, psi)
Idle speed	More than 100 (1.0, 15)
2,000	More than 290 (3.0,42)

If difference is extreme, check oil passage and oil pump for oil leaks.

After the inspections, install oil pressure switch as follows:
1. Remove the old liquid gasket adhering to oil pressure switch and engine.
2. Apply liquid gasket and tighten oil pressure switch to specification.
  Use Genuine RTV Silicone Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
  1. 14.8 N.m (1.5 kg-m, 11 ft-lb)