Hyundai Matrix 2003 Owner's Manual page 144

G060C01S-GAT
Changing the Spark Plugs
SSA6060B
You will find it easier to change spark plugs if
the engine is cold. Always change one spark
plug at a time. This helps avoid getting the wires
mixed up.
1. Remove the center cover on the engine
rocker cover.
2. Using a clean cloth, remove any dirt that has
accumulated around the spark plug so it
cannot fall into the cylinder when the spark
plug is removed.
3. To remove the spark plug cable, pull straight
up on the insulated connector, not the cable.
Pulling on the cable may damage the carbon
core conductor.
DO-IT-YOURSELF MAINTENANCE
SSA6061A
WARNING:
It is recommended that the engine be cool
or cold when changing the spark plugs. If
the engine is hot, you could burn yourself
on the insulated connector, the spark plug
or the engine itself.
4. When preparing to remove the old spark
plug, guide the socket down over the spark
plug, being careful not to damage the ce-
ramic insulator.
5. To remove the spark plug, turn the wrench
handle in a counterclockwise direction.
6. To install the new spark plug, guide the
socket down over the spark plug, being
careful not to damage the ceramic insulator.
SSA6062A
NOTE:
Spark plugs should be tightened firmly. Over-
tightening can damage the threads in the
aluminum cylinder head. Leaving them too
loose can cause the spark plugs to get very
hot and possibly result in damage to the
engine.
7. Replace the cable by pushing the insulated
connector directly down onto the electrode.
Check to be sure it has snapped into place
and can't fall off.
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