Lubrication System Troubleshooting; Oil Leakage; Low Oil Pressure; High Oil Pressure - Toyota 7M-GE Repair Manual

LU-4
LUBRICATION SYSTEM
- Troubleshooting
Problem
Oil leakage
Low oil pressure
High oil pressure
TROUBilESHOOTlNG
Possible cause
Cylinder head, cylinder block or oil pump
body damaged or cracked
Oil seal faulty
Gasket faulty
Oil leakage
Relief valve faulty
Oil pump faulty
Engine oil poor quality
Crankshaft bearing faulty
Connecting rod bearing faulty
Oil filter clogged
Relief valve faulty
Remedy
Repair as necessary
Replace oil seal
I
Replace gasket
Repair as necessary
Repair relief valve
Repair oil pump
Replace engine oil
Replace bearing
Replace bearing
Replace oil filter
Repair relief valve
Page
EM-84
LU-8
W-8 ~