PERIODIC MAINTENANCE 2-21
If oil pressure is lower or higher than specification, following
causes may be considered.
(See page 6-65 for oil passage locations)
Low oil pressure
• Clogged oil filter
• Leakage from oil passages
• Defective oil pump
• Defective oil pressure
regulator
• Damage O-ring
• Combination of above items
OIL PRESSURE
Oil pressure (at normal operating temp.) :
550 – 600 kPa (5.5 – 6.0 kg/cm
2
, 78 – 85 psi.)
at 3000 r/min.
NOTE:
The figure shown above is a guideline only, not an absolute
service limit.
High oil pressure
• Using an engine oil of too
high viscosity
• Clogged oil passage
• Clogged oil pressure
regulator
• Combination of above items
TEST PROCEDURE
1. Check engine oil level.
2. Remove bolts and air duct
1 .
3. Loosen screw and disconnect blue lead wire from oil pres-
sure switch 2 .
Remove oil pressure switch.
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