seized spark plugs

2001 CHEVROLET MONTE CARLO
233,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
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JOE1953
  • MEMBER
  • 803 POSTS
spark plugs is hard to remove what is the best way to remove them?
Nov 13, 2025 at 5:25 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,237 POSTS
Run the engine up to temperature, shut it off and prep the plugs by removing the coils and spray just a bit of penetrant in around the plug. Let the engine cool down and then remove them. Beyond that there isn't a lot that you can do. I know some folks who use a lower torque battery impact to remove them but I'm not that trusting of them coming out in one piece.
Nov 13, 2025 at 11:55 AM
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