Pontiac G8 Forum banner
1 - 1 of 1 Posts

· Registered
5,330 Posts
What kind of plugs? Iridium? If just regular plugs 12k is half its life. At least check the gap. I would look at injectors being dirty. They may not sealing 100% cold and leak causing the rich condition. Run them a few minutes and warmed they seal and the car idles better.
  • Like
Reactions: jonup
1 - 1 of 1 Posts