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1.2L REVOTRON ENGINE
12
5. Exhaust System
Condition
Possible Cause
Remedy
Engine emits white
smoke from tailpipe.
Obstructed air filter or air Inlet
Clean or replace air filter or Inlet.
Head gasket leaking coolant into
combustion chamber
Inspect engine oil for coolant and
perform engine compression test.
Engine cylinder head or block
cracked
Inspect engine oil for coolant and
perform engine compression test.
Engine oil or other substance on
exhaust manifold
Inspect exhaust manifold for
foreign material.
Improper grade or contaminated
fuel
Rush fuel system with fresh, clean,
fuel of the correct type. Replace
fuel filter.
Mix of oil and water in oil cooler
Check for oil and water mix up in
oil cooler. Flush and clean.
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.
Exhaust rubber hanger
wear / crack.
Ageing of rubber hanger
Check the Exhaust rubber hangers
& replaced if found crack / damage
or wear.
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.