2-30 PERIODIC MAINTENANCE
OIL PRESSURE CHECK
Check the engine oil pressure periodically. This will give a good indication of the condition of the moving
parts.
% Oil pressure:
Above 20 kPa (0.2 kgf/cm², 2.8 psi)
Below 60 kPa (0.6 kgf/cm², 8.5 psi)
Low or high oil pressure can indicate any of the following conditions:
LOW OIL PRESSURE
* Clogged oil filter
* Oil leakage from the oil passage
* Damaged O-ring
* Defective oil pump
* Combination of the above items
HIGH OIL PRESSURE
* Engine oil viscosity is too high
* Clogged oil passage
* Combination of the above items
OIL PRESSURE TEST PROCEDURE
• Connect the tachometer onto the spark plug high-tension
cord.
• Remove the main oil gallery plug
1.
• Install the oil pressure gauge and adaptor into the main oil
gallery.
• Warm up the engine as follows:
Summer: 10 minutes at 2 000 r/min
Winter: 20 minutes at 2 000 r/min
• After warming up the engine, increase the engine speed to
3 000 r/min (observe the tachometer), and read the oil pres-
sure gauge.
$ 09915-74511: Oil pressure gauge
09915-74532: Adaptor
09900-26006: Tachometer
" Main oil gallery plug: 18 N·m (1.8 kgf-m, 13.0 lb-ft)
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