Using WD-40 on Seized Spark Plugs: Tips and Techniques

Learn how to effectively use WD-40 on seized spark plugs to loosen them for easy removal.

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Yes, you can use WD-40 on seized spark plugs. First, ensure the engine is cool. Spray WD-40 generously around the base of the spark plug and allow it to penetrate for several minutes. This helps to loosen rust and debris. Then, carefully attempt to remove the spark plug using the proper socket wrench. If it remains difficult, additional applications of WD-40 may be necessary.

FAQs & Answers

  1. Can WD-40 damage spark plugs? No, WD-40 is safe to use on spark plugs when applied correctly. Just avoid excessive amounts to prevent residue.
  2. How long should I let WD-40 sit on a seized spark plug? It's recommended to let WD-40 penetrate for at least 10-15 minutes before attempting to remove the spark plug.
  3. What should I do if my spark plugs are still stuck after using WD-40? If the spark plugs remain stuck, try applying additional WD-40 and give it more time to work, or gently tap the plug wrench to break the seal.

Watch More

For more automotive maintenance tips, check out our videos on spark plug replacement and using lubricants for repair jobs. Knowing how to properly maintain your vehicle can save you both time and money!

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