C0-4
COOLING
SYSTEM
-
Troubleshooting
TROUBLESHOOTING
Problem
Possible
cause
Remedy
Page
Engine overheats
Check coolant
Replenish coolant
Water
pump
drive belt loose
or
missing
Adjust
or
replace belt
Dirt, leaves
or
insects on radiator
Clean radiator
Hoses,
water
pump,
thermostat
housing, Repair
as
necessary
radiator, heater, core plugs
or
head gasket
leakage
Thermostat
faulty
Check
thermostat
C0-13
Ignition timing retarded Set timing
Electric cooling system faulty Inspect electric cooling system
C0-21
Radiator hose plugged or rotted Replace hose
Water
pump
faulty
Replace
water
pump
C0-6
Radiator plugged
or
cap faulty Check radiator
C0-15
Cylinder head or block cracked
or
plugged
Repair as necessary
HINT: The
thermostat
is equipped
with
a
by-pass
valve,
if
the engine
tends
to
overheat, removal
of
the
ther-
mostat
would
have
an
adverse
effect,
causing a loss
of
cooling
efficiency.
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