Engine Lubrication: Testing and Inspection

Oil Pressure Check

NOTE: Prior to checking oil pressure, check the followings.
- Oil level in oil pan
If oil level is low, add oil up to Full level hole on oil level gauge.
- Oil quality
If oil is discolored, or deteriorated, change it.
For particular oil to be used.
- Oil leaks
If leak is found, repair it.





1. Remove oil pressure switch (1) from cylinder block.
2. Install special tool (oil pressure gauge) to vacated threaded hole. For LH steering vehicle, use oil pressure gauge (special tool (A)) with special tool (B) instead of the steel adaptor supplied in special tool (A).
Special tool
(A): 09915-77310
(B): 09915-76510
3. Start engine and warm it up to normal operating temperature.
4. After warming up, raise engine speed to 4000 rpm and measure oil pressure.
Oil pressure specification 390 - 470 kPa (3.9 - 4.7 kgf/cm2, 55.5 - 66.8 psi) at 4000 rpm





5. After checking oil pressure, stop engine and remove oil pressure gauge.





6. Before reinstalling oil pressure switch, be sure to wrap its screw threads with sealing tape and tighten switch to specified torque.
Tightening torque

NOTE: If sealing tape edge is bulged out from screw threads of switch, cut it off.

7. Start engine and check oil pressure switch for oil leakage.