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1.2L REVOTRON ENGINE
13
fuel lines are pinched or
clogged
Correct the routine to avoid pinch,
or allow shop air to clear the clog in
the fuel lines.
Improper Electrical supply at
pump connector
If electrical supply is in proper
check electrical system.
In adequate fuel pump
pressure
IF fuel pump does not built
pressure then replace.
'Squeal' or 'chirping' while
engine is running.
Worn,
oil-fouled,
or
improperly adjusted engine
accessory belt.
Check engine accessory belt
condition and tension. Adjust or
replace.
Belt tensioner not properly
tightened or defective
Inspect the belt tensioners. Tighten
or replace as necessary.
'Clunking' or 'rapping' noise
from bottom end of engine
Defective piston wrist pin,
rod, or main bearings
If noise occurs after taking foot off
accelerator pedal, inspect piston
wrist pins.
If noise is constant inspect rod
bearings and main bearings for
proper clearance and condition
Replace bearings as necessary.
'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.
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.
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.