Hyundai 2004 Santa Fe Owner's Manual page 205

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Replacing the Spark Plugs
The spark plugs should be changed at the
intervals specified in the vehicle maintenance
schedule in Section 5 or whenever engine
performance indicates they should be changed.
Symptoms that suggest poor spark plug perfor-
mance include engine misfiring under load, loss
of fuel economy, poor acceleration, etc. When
spark plugs are replaced, always use spark
plugs recommended by Hyundai. The use of
other spark plugs can result in loss of perfor-
mance, radio interference or engine damage.
NOTE:
o When replacing the spark plug, genuine
Hyundai replacement parts are recom-
mended.
o It is recommended that the spark plug
should be changed by an authorized
Hyundai dealer. (2.7 L, 3.5 L)
Recommended Spark Plugs:
Type
RN10PYP4 (CHAMPION)
PGR5C-11 (NGK)
RC10PYPB4 (CHAMPION)
PFR5N-11 (NGK)
G060C0IO-AAT
Changing the Spark Plugs
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 (2.4 L) on the
engine rocker cover.
2. Using a clean cloth, remove any dirt that has
Remark
accumulated around the base of the spark
plug so it cannot fall into the cylinder when the
2.4 L
spark plug is removed.
3. To remove the spark plug cable, pull straight
up on the insulated connector, not the cable.
2.7 L / 3.5 L
Pulling on the cable may damage the carbon
core conductor.
DO-IT-YOURSELF MAINTENANCE
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!
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 old spark plug, turn the
wrench handle in a counterclockwise direc-
tion.
6
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