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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2007HHR L4-2.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTUNE-UP AND ENGINE PERFORMANCE CHECKSSPARK PLUGSERVICE AND REPAIR
2007 Chevrolet HHR L4-2.4L
Spark Plug: Service and Repair
2007 Chevrolet HHR L4-2.4LSECTION Service and Repair
Spark Plug Replacement
Removal Procedure
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
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 1.06 mm (0.042 in).
2. Apply dielectric compound to the spark plug boots and make sure no corrosion is present.
3. Install the ignition coils.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.