TROUBLESHOOTING.
12-19
OIL PRESSURE DOES NOT RISE
Checkpoint
Trouble Cause
Remedy
Engine oil
NG Improper viscosity engine oil
Too much engine oil
OK
NG
i
Replace the engine oil
Correct the engine oil volume
Oil pressure gauge or unit
Oil pressure indicator light
I
OK
NG
Defective oil pressure gauge or NG
Repair or replace the oil pres-
, unit
sure gauge or unit
Defective indicator light
Replace the indicator tight
I
l
I
Oil filter
NG
Clogged oil filter element
NG Replace the oil filter element or
the oil filter cartridge
c
OK
,
4
t
t
Relief valve and by-pass valve
NG
Relief valve sticking and/or weak NG Replace the relief valve and/or
r
by-pass valve spring the by-pass valve spring
I c
I
I
. -
OK 1
Oil pump
.
NG
Clogged oil pump strainer
NG
Clean the oil pump strainer
,
NG
Worn oil pump related parts
NG
Replace the oil pump related
parts
‘ .
OK
i
1
Rocker arm shaft
NG
Worn rocker arm bushing
NG
1 Replace the rocker arm bushing
1
1
Continued
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