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1.2L REVOTRON ENGINE
11
Faulty spark plugs, wires, or
ignition coil
Check ignition system components for
proper operation. Replace as necessary.
Incorrect crank angle signal.
Check sensor gap and adjust to 1.0 ±
0.4mm
Improper firing order
Check ignition system and fuel injector
connections. Rectify as necessary.
Fuel filter if clogged.
Replace the fuel filter.
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.
Engine Noise
Condition
Possible Cause
Remedy
Engine 'pings' or
'knocks' while
accelerating or
travelling uphill.
Improper grade of fuel
Fill fuel tank with a minimum BSVI Fuel
Spark plugs excessively worn or
gapped improperly.
Inspect spark plugs. Replace if worn.
Incorrect valve/ignition timing
Check timing system components and
repair or replace as necessary.
Excessively worn camshaft
Inspect camshaft lobes and run-out for
excessive wear. Replace as necessary
Fuel filter if clogged.
Replace the fuel filter.
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.