Engine Oil Pressure: Inspection

WARNING: This page is about a different car, the 2004 Subaru Outback, 2004 Subaru Legacy, and 2004 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect battery ground cable.

Fig 1: Disconnecting Battery Ground Cable
Courtesy of SUBARU OF AMERICA, INC.
Remove generator from bracket. Refer to REMOVAL , Generator.
Disconnect connector from oil pressure switch.
Remove oil pressure switch from engine cylinder block. Refer to REMOVAL , Oil Pressure Switch.
Connect oil pressure gauge hose to cylinder block.
Connect battery ground cable.

Fig 2: Connecting Battery Ground Cable
Courtesy of SUBARU OF AMERICA, INC.
Start the engine, and measure oil pressure.

Fig 3: Measuring Oil Pressure
Courtesy of SUBARU OF AMERICA, INC.
1. Oil pressure:
  1. 88 kPa (0.9 kg/cm ² , 13 psi) or more at 800 RPM
  2. 294 kPa (3.0 kg/cm ² , 43 psi) or more at 5,000 RPM
CAUTION:
- If oil pressure is out of specification, check oil pump, oil filter and lubrication line. Refer to INSPECTION , Engine Lubrication System Trouble in General.
- If oil pressure warning light is turned ON and oil pressure is in specification, replace oil pressure switch. Refer to INSPECTION , Engine Lubrication System Trouble in General.
NOTE: The specified data is based on an engine oil temperature of 80°C (176°F).
After measuring oil pressure, install oil pressure switch. Refer to INSTALLATION , Oil Pressure Switch.
1. Tightening torque: 25 N.m (2.5 kgf-m, 18.1 ft-lb)
Install generator and V-belt in the reverse order of removal, and adjust the V-belt deflection. Refer to INSTALLATION , V-BELT.