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.
2010 Jeep Commander Limited, RWDFACTORY OEM SERVICE PROCEDURE
Spark Plug: Removal: 5.7L
- Remove all the necessary air filter tubing and air intake components at the top of the engine and at the throttle body. Refer to Engine/Air Intake System/BODY, Air Cleaner - Removal
- Prior to removing the ignition coil, spray compressed air around the base of the ignition coil at the cylinder head.
- Remove the ignition coil (1). See Electrical - Ignition Control/Ignition Control/COIL, Ignition - Removal
- Prior to removing the spark plug, spray compressed air into the cylinder head opening.
- Remove the spark plug from the cylinder head using a quality thin wall socket with a rubber or foam insert.
- Inspect the spark plug condition.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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