Engine Oil Pressure: Testing and Inspection

ENGINE OIL

Inspection


ENGINE OIL LEVEL

NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop it and allow 10 minutes before checking.
1.Pull out oil level gauge and wipe it clean.





2.Insert oil level gauge and check the engine oil level is within the range (A) shown in the figure.
3.If it is out of range, adjust it.

ENGINE OIL APPEARANCE

- Check engine oil for white turbidity or heavy contamination.
- If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.

ENGINE OIL LEAKAGE

Check for engine oil leakage around the following areas:
- Oil pans (lower and upper)
- Oil pan drain plug
- Oil pressure switch
- Oil filter
- Oil cooler
- Intake valve timing control cover and intake valve timing control solenoid valve
- Front cover
- Mating surface between cylinder head and rocker cover
- Mating surface between cylinder block and lower cylinder block
- Mating surface between cylinder block and cylinder head
- Crankshaft oil seals (front and rear)

OIL PRESSURE CHECK


WARNING:
- Be careful not to get burn yourself, as engine oil may be hot.
- When checking engine oil pressure, shift position should be "Parking", and apply parking brake securely.
1.Check the engine oil level.
2.Remove engine under cover with power tool.





3.Disconnect harness connector at oil pressure switch (1), and remove oil pressure switch using deep socket (commercial service tool).






CAUTION:
Never drop or shock oil pressure switch.





4.Install the oil pressure gauge [SST: ST25051001 (J-25695-1)]
(A) and hose [SST: ST25052000 (J-25695-2)] (B).
5.Start the engine and warm it up to normal operating temperature.
6.Check the engine oil pressure with engine running under no-load.
NOTE:
When the engine oil temperature is low, the engine oil pressure becomes high.
Engine oil pressure: [1][2]Engine Oil Pressure.

If difference is extreme, check engine oil passage and oil pump for engine oil leakage.
7.After the inspections, install oil pressure switch as follows:
a.Remove old liquid gasket adhering to oil pressure switch and the mating surface.
b.Apply liquid gasket and tighten oil pressure switch to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Recommended Chemical Products And Sealants.

Tightening torque: Exploded View.
c.After warming up engine, check that there is no leakage of engine oil with running engine.