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1.2L REVOTRON ENGINE
12
'Tapping' or 'ticking'
noise from the top
end of the engine
Fuel injectors worn excessively
Fuel injectors will make some ticking
noise. Replace fuel injectors if not putting
out enough fuel to cylinders.
Excessively worn camshaft
Inspect camshaft. lobes and runout for
excessive wear. Replace as necessary.
Valve springs, tappets, or rocker
arms worn
Inspect valve train components; replace
as necessary.
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.
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.
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.