[krivasauto]

Originally Posted by cleong

Hi guys. Does anyone have a step by step guide on how to change the spark plugs on a 1999 3.5 Intrigue. I'm pretty confident I can do this myself but need a step by step of what to do since I have never done it.

Also any recommendations for what plugs to use?

Thanks in advance.

• Get Delco/ NGK plugs (I got mine at Autozone). They come gapped.
• Get a thin walled, extended length 5/8" socket (also at Autozone).
• Get some antiseize compound (also at, you guessed it).
• Get some brake cleaner or carb spray.
• Get a mirror.
• Let engine get totally cold.
• Remove connector to the coil pack and then these screws:

• Carefully pry the coil pack away from the cylinder head cover:

• Carefully remove any spark plug boots that stay on the plugs by lightly grasping with needle nose pliers and gently rotating while pulling. Make careful note of how they go back on the coil pack.
• Use cleaner and either a MityVac or compressed air and a rag to clean the oil out of the spark plug holes that often builds up. A mirror helps see these, especially on the back side bank.
• Replacing them is pretty straightforward, like any other car. Just don't forget to plug the coil packs back in.