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1.2L REVOTRON ENGINE
13
Defective thermostat
Remove thermostat and check for proper
opening at specified temperature.
Defective water pump
Inspect and replace water pump as
necessary.
Defective temperature sending unit
Check coolant temperature sending 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.
Over cooling
Defective thermostat
Remove thermostat and check for proper
opening at specified temperature.
Defective temperature sending unit
Check coolant temperature sending unit.
Replace as necessary.
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
Mechanical oil seal, O-ring, or
gasket leaking
Inspect engine oil seals and gaskets for
visual signs of leakage. Replace seals or
gaskets as necessary.
Engine does not
develop oil pressure
Low oil level or Incorrect grade of
oil
Add proper grade of oil until level is at the
'MAX' mark on dipstick
Faulty oil pressure sending unit
Replace faulty sending unit as needed.
Defective engine oil pump/oil pump
relief valve stuck open
Inspect oil pump operation. Repair or
replace as necessary.
Excessive wear of connecting
rods, main bearings and journals,
or
other
internal
engine
components.
Repair/replace engine components.
Oil Filter clogged strainer clogged
Clean or replace.