Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
Engine Oil Pressure: Testing and Inspection
INSPECTION
1. Disconnect the ground terminal from battery.
2. Remove the generator from bracket.
1. Loosen the lock bolt and slider bolt, and remove the front side V-belt.
2. Remove the generator lock bolt.
3. Remove the bolt which installs the generator on bracket.
3. Disconnect the connector from oil pressure switch.
4. Remove the oil pressure switch from engine cylinder block.
5. Connect the oil pressure gauge hose to cylinder block.
6. Connect the battery ground terminal to battery.
7. Start the engine, and measure oil pressure.
Oil pressure:
98 kPa (1.0 kgf/cm2, 14 psi) or more at 800 rpm
294 kPa (3.0 kgf/cm2, 43 psi) or more at 5,000 rpm
CAUTION:
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If the oil pressure is out of specification, check oil pump, oil filter and lubrication line.
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If the oil pressure warning light is turned ON and oil pressure is in specification, replace the oil pressure switch.