Revotron 1.2T
15
Engine emits blue smoke from
tailpipe
Worn or damaged valve
guide seals
•
Remove rocker arm cover and
inspect valve guide seals. Replace
as necessary.
Engine crankcase overfilled
with oil
•
Check oil level; drain oil as
necessary.
Worn
I
damaged piston
ring(s) or cylinder bore,
permitting oil blow-by
•
Perform engine compression test
and/or leak-down test.
Head gasket leaking oil into
combustion chamber
•
Inspect engine coolant for oil and
perform engine compression test.
Engine emits black smoke from
tail pipe
Excess carbon deposits in
combustion chamber
•
Remove carbon deposits in
combustion chamber using a
commercially available cleaner
Excess
fuel
entering
cylinder(s)
•
Check lambda/O2 and other
engine
sensors
for
proper
operation.
•
Test fuel injectors for proper
operation or leakage.
•
Check the fuel and emissions
system for proper operation.
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
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.
