Genuine 2009 Volvo S40 Spark Plug

2009 Volvo S40 Spark Plug Parts and Q&A

• Q: What is the importance of spark plugs for engine efficiency and what steps should be followed for their maintenance and replacement on 2009 Volvo S40?

  A: Proper spark plug function is very important to engine efficiency. Typically, they require no attention in between scheduled renewals if the correct type is used. Removal requires a spark plug socket, feeler blades, and a torque wrench. Clean recesses prior to removal, inspect for wear and ensure proper installation to avoid cross-threading.