How can a Spark Plug be cleaned and prepared for use on Jeep Liberty?

Spark plugs can be cleaned using commercially available spark plug cleaning equipment. After cleaning, the center electrode should be filed flat with a small point file or jeweler's file before adjusting the gap. It is important to never use a motorized wire wheel brush for cleaning spark plugs, as metallic deposits will remain on the spark plug insulator and can lead to plug misfire.

How to remove each Spark Plug and inspect the ignition coil and spark plug condition on Jeep Liberty?

To take off each spark plug, first take off the air filter tubing at the throttle body. Use the compressed air spray around the base of the ignition coil, on the cylinder head before removing it. Next, blow compressed air inside the cylinder head opening to stop any foreign material from getting into the combustion chamber. Remove the spark plug from the cylinder head with a quality socket with a rubber or foam insert and check the ignition coil O-ring for condition and replace if necessary. Lastly, check the condition of the spark plug.

OEM Jeep Liberty Spark Plug

Ignition Spark Plug

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Jeep Liberty Spark Plug Part Number: SPZFR6F11G
$6.44 MSRP: $9.25
You Save: $2.81 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: High Ignitability Spark Plug; Double Platinum, Iridium Power, Platinum TT, Iridium TT, Standard.
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2002-2012 Jeep Liberty | 65th Anniversary Edition, Jet, Limited, Renegade, Rocky Mountain Edition, Sport | 6 Cyl 3.7 L GAS
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Jeep Liberty Spark Plug Part Number: 68307021AA
$10.26 MSRP: $15.00
You Save: $4.74 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Plug
- Replaces: 4606402AB, S3RE14MCC5, SPRE14MCC5, 5018976AA, S2RE14MCC5
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2002-2004 Jeep Liberty | Sport | 2.4L L4, 4 Cyl 2.4 L GAS
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Jeep Liberty Spark Plug Part Number: S2LZTR4A11
$6.46 MSRP: $8.35
You Save: $1.89 (23%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Iridium Power; Spark Plug Iridium TT; Spark Plug Lztr4A-11
- Replaces: SPLZTR4A11
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2005 Jeep Liberty | Sport | 2.4L L4, 4 Cyl 2.4 L GAS

Jeep Liberty Spark Plug

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Jeep Liberty Spark Plug Parts and Q&A

Spark Plug
68307021AA
Q: How can a Spark Plug be cleaned and prepared for use on Jeep Liberty?
A:
Spark plugs can be cleaned using commercially available spark plug cleaning equipment. After cleaning, the center electrode should be filed flat with a small point file or jeweler's file before adjusting the gap. It is important to never use a motorized wire wheel brush for cleaning spark plugs, as metallic deposits will remain on the spark plug insulator and can lead to plug misfire.
Spark Plug
SPZFR6F11G
Q: How to remove each Spark Plug and inspect the ignition coil and spark plug condition on Jeep Liberty?
A:
To take off each spark plug, first take off the air filter tubing at the throttle body. Use the compressed air spray around the base of the ignition coil, on the cylinder head before removing it. Next, blow compressed air inside the cylinder head opening to stop any foreign material from getting into the combustion chamber. Remove the spark plug from the cylinder head with a quality socket with a rubber or foam insert and check the ignition coil O-ring for condition and replace if necessary. Lastly, check the condition of the spark plug.