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1.2L REVOTRON ENGINE
16
6. Cooling System
Condition
Possible Cause
Remedy
Overheating
Low coolant level/ Cooling
system leaking
Check coolant level in reservoir
and inspect system for leaks. Add
coolant as necessary.
Defective thermostat
Remove thermostat and check for
proper opening at specified
temperature.
Defective water pump
Inspect and replace water pump as
necessary.
Defective temperature sensor
unit
Check coolant temperature sensor
unit Replace as necessary.
Engine
cooling
fan
malfunctioning
Test operation of engine cooling
fan. Repair or replace as
necessary.
Engine overloading
Make sure vehicle brakes are not
dragging.
Vehicle overloaded. Make sure
vehicle does not exceed weight
limit with cargo.
Engine lean condition
Verify proper operation of fuel
system
components.
Repair
system or replace components as
necessary.
Head gasket leaking
Test engine compression. Replace
head gasket as necessary.
Radiator water in/out leakage
or clogged
Check Radiator water in/out
leakage or clogged and take
corrective action.
Over cooling
Defective thermostat
Remove thermostat and check for
proper opening at specified
temperature.
Defective
temperature
sending unit
Check
coolant
temperature
sensing
unit.
Replace
as
necessary.
7. Engine Lubrication System
Condition
Possible Cause
Remedy
Engine consumes oil
Obstructed air filter or air
Inlet
Clean or replace air filter or inlet
Worn piston rings
Perform compression or leak-down
test
Worn valve guide seals or
other valve train component.
Inspect valve train components.
Repair or replace as necessary