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1.2L REVOTRON ENGINE
54
IV. SPARK PLUG REPLACEMENT
DESCRIPTION
Engine spark plugs are an integral part of engine
performance and fuel economy. Worn,
damaged, or spark plugs with excessive carbon
buildup may cause the engine not to start,
misfire, or cause poor fuel economy. Replace
the spark plugs as a set every 30,000 km or
sooner as needed using the part numbers and
gap setting in Table.
Spark Plug Part No.
Gap Setting (mm)
BOSCH, YR5NII33S
0.7 - 0.8
BOSCH, YR5ME0
REMOVAL
1. Park the vehicle on a level surface, engage
the parking brake, and raise the hood.
2. Clean any dirt and debris from around the
spark plugs and spark plug ignition coils.
NOTE
To avoid confusion, remove and replace
one spark plug at
a
time.
3. Disconnect the spark plug top coil from the
spark plug by gripping the boot and pulling.
4. Use M16 Socket to remove the spark plug
from the cylinder head.
INSTALLATION
1. If reusing the spark plugs, clean using a
brush and a solvent prior to installation.
2. Verify the electrode gap is between 0.7 to
0.8 mm. Adjust the gap necessary.
3. Carefully hand-thread the spark plug into the
cylinder head. Do not cross-thread the spark
plug into the cylinder head.
4. Once the spark plug has seated, use the
M16 socket to torque the spark plug to 1.75 -
2.25 kgfm.
Spark Plug Part No.
Gap Setting (mm)
BOSCH, YR5NII33S
0.7 - 0.8
BOSCH, YR5ME0
5. Connect the correct spark ignition coils to
the spark plug. Verify the cable terminal
makes a firm connection with the top of the
spark plug.
6. Repeat the procedure for the remaining
spark plugs.