2007 Chevrolet Cobalt L4-2.2LFACTORY OEM SERVICE PROCEDURE

Spark Plug: Service and Repair



Spark Plug Replacement

Removal Procedure

Factory service manual diagram



1. Remove the ignition coils.

Important: Make sure that any water and/or debris is blown out of the spark plug holes prior to removing the spark plugs.

2. Remove the spark plugs using a 5/8 inch spark plug socket.

Installation Procedure

Factory service manual diagram





Notice: Refer to Fastener Notice.

Notice: Do not coat spark plug threads with anti-seize compound. If anti-seize compound is used and spark plugs are over-torqued, damage to the cylinder head threads may result.

1. Install the spark plugs.

Tighten the plugs to 20 N.m (15 lb ft).

The spark plug gap is 1.1 mm (0.45 in).

2. Apply dielectric compound to the spark plug boots and make sure no corrosion is present.
3. Install the ignition coils.
Factory Service Tools

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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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