Engine Lubrication: Testing and Inspection

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 from cylinder block.





2. Install special tool (Oil pressure gauge) to vacated threaded hole.

Special Tool or equivalent:
(A): 09915-77310
(B): 09915-78211

3. Start engine and warm it up to normal operating temperature.
4. After warming up, raise engine speed to 4,000 rpm and measure oil pressure.

Oil pressure specifications: 330 - 430 kPa (46.9 - 61.1 psi) at 4,000 r/min (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 a sealing tape and tighten switch to specified torque.

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

Tightening Torque (a): 12 - 15 Nm (9.0 - 10.5 ft. lbs.)

7. After installing oil pressure switch, start engine and check oil pressure switch for oil leakage.