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 MANUALSFORD2012MUSTANG V8-5.4L SCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTUNE-UP AND ENGINE PERFORMANCE CHECKSSPARK PLUGSERVICE AND REPAIRSPARK PLUGS
2012 Ford Mustang V8-5.4L SC
Spark Plugs
2012 Ford Mustang V8-5.4L SCSECTION Spark Plugs
Spark Plugs
Removal and Installation
1. Remove the ignition coil-on-plugs. For additional information, refer to Ignition Coil-On-Plug Ignition Coil-On-Plug.
2. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage may occur to the cylinder head or spark plug.
NOTE: Use compressed air to remove any foreign material from the spark plug well before removing the spark plugs.
NOTE: If an original spark plug is used, make sure it is installed in the same cylinder from which it was taken. New spark plugs can be used in any cylinder.
Remove the 8 spark plugs.
- To install, tighten to 18 Nm (159 lb-in).
3. Inspect the spark plugs. Install new spark plugs as necessary.
4. Adjust the spark plug gap as necessary.
5. To install, reverse the removal procedure.
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.