Engine Lubrication: Testing and Inspection
Oil Pressure CheckWARNING: To avoid danger of being burned, do not touch exhaust manifold when exhaust system is hot. When servicing, be sure to perform it after exhaust system has cooled down.
NOTE: Prior to checking oil pressure, check the following.
^ 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.
^ Oil leaks
If leak is found, repair it.
1. Disconnect oil pressure switch connector.
2. Remove oil pressure switch (1) from cylinder block.
3. Install special tool (Oil pressure gauge) to vacated threaded hole
Special tool
(A): 09915-77310
(B): 09915-78211
CAUTION: Be careful not to make special tool touch Exhaust manifold when installing because Exhaust manifold becomes very hot.
4. Start engine and warm it up to normal operating temperature
NOTE: Be sure to place transmission gear shift lever in "Neutral" (shift selector lever to "P" range for A/T model), and set parking brake and block drive wheels.
5. After warming up, raise engine speed to 4,000 r/min and measure oil pressure
Oil pressure specification 390 - 470 kPa (3.9 - 4.7 kgf/cm2, 55.5 - 66.8 psi) at 4,000 r/min (rpm)
6. After checking oil pressure, stop engine and remove oil pressure gauge
7. Before reinstalling oil pressure switch (2), be sure to wrap its screw threads with sealing tape (1) and tighten switch to specified torque.
Tightening torque
Oil pressure switch (a): 15 Nm (1.5 kgf-m, 11.0 ft. lbs.)
NOTE: If sealing tape edge is bulged out from screw threads of switch, cut it off.
8. Start engine and check oil pressure switch for oil leakage.