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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX V6-3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPARK PLUGSERVICE AND REPAIR
2008 Pontiac Grand Prix V6-3.8L

Spark Plug: Service and Repair

2008 Pontiac Grand Prix V6-3.8LSECTION Service and Repair


Spark Plug Replacement

Removal Procedure





1. Remove the spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement (Service and Repair) .
2. Remove the spark plugs from the engine.



Installation Procedure

1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement to the gap specifications. Refer to Ignition System Specifications (Specifications) . Correct as necessary.





Notice: Refer to Fastener Notice (Fastener Notice) .

2. Install the spark plugs to the engine.

* If installing the spark plugs to a new cylinder head tighten the plugs to 27 N.m (20 lb ft).
* If installing the spark plugs to an existing cylinder head tighten the plugs to 15 N.m (11 lb ft).


3. Connect the spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement (Service and Repair) .


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.