Replacing The Spark Plugs; Changing The Spark Plugs; Recommended Spark Plugs - Hyundai 2001 Sonata Owner's Manual

NOTE:
Do not clean or regap platinum-tipped spark
plugs.
G060B03Y-AAT

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 per-
formance 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:
When replacing the spark plug, always use
the genuine parts recommended.

Recommended Spark Plugs:

Type
RN10PYP4 (CHAMPION)
For 2.4L only
PGR5C-11 (NGK)
RC10PYP4 (CHAMPION)
For 2.5L only
PFR5N-11 (NGK)
DO-IT-YOURSELF MAINTENANCE
G060C03Y-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 (2.4 L) cover on the
engine rocker cover.
NOTE:
It is recommended that the spark plug (For
Engine 2.5L) should be changed by an au-
Remark
thorized Hyundai dealer.
2. Using a clean cloth, remove any dirt that has
accumulated around the base of 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.
G060C01O
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. To install the new spark plug, guide the
socket down over the spark plug, being
careful not to damage the ceramic insulator.
G060C02O
6-7