Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC2005SUNFIRE L4-2.2L VIN FREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPARK PLUGSERVICE AND REPAIR
2005 Pontiac Sunfire L4-2.2L VIN F
Spark Plug: Service and Repair
2005 Pontiac Sunfire L4-2.2L VIN FSECTION Service and Repair
SPARK PLUG REPLACEMENT
REMOVAL PROCEDURE
NOTE: This engine has aluminum cylinder heads. Do not remove the spark plugs from a hot engine, allow it to cool first. Removing the spark plugs from a hot engine may cause spark plug thread damage or cylinder head damage.
1. Remove the ignition coil housing.
2. Remove the spark plugs with a spark plug socket.
IMPORTANT: Remove any water and debris from the spark plug holes before spark plug removal with compressed air.
3. Inspect the spark plugs. Refer to Spark Plug Inspection.
INSTALLATION PROCEDURE
1. Gap the spark plug, using round wire type spark plug gap gage.
Adjust the spark plug gap to 1.14 mm (0.045 in).
2. Install the spark plugs with a spark plug socket.
IMPORTANT: DO NOT coat the spark plugs with anti seize compound. Over torquing could occur and damage to the cylinder head threads may result.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the spark plugs to 20 N.m (15 lb ft).
3. Install the ignition coil housing.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.