Should I grease spark plug threads?

Thread breakage can sometimes involve removing the cylinder head for repair. Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental. via

How do you know when spark plugs need to be changed?

  • Engine Misfires. A misfiring engine is a big sign that one or more of your spark plugs are not firing properly.
  • Poor Gas Mileage. When spark plugs are working correctly, they burn fuel efficiently in your engine.
  • Trouble Starting.
  • Slow Acceleration.
  • Rough Idling.
  • via

    Leave a Reply

    Your email address will not be published.