I spent some time today reading the posts on "blown spark plugs", sorry that has happened to some of you. There is an article on Pickup.com about the new 2004 F150 and it shows a picture of the redesigned spark plug for the 5.4L 3V.

I would be very interested in hearing some comments after you look at the picture of the new spark plug. This is a topic of concern if you are considering a 2004 F150 with a 5.4 3V - after all the plug problems that have occured. Do you think the new plug will be problematic?

Paragraph from the article: In order to make the 3-valve system work, Ford had to reengineer the spark plug, which now resides in a center position surrounded by the valves. The plug is longer, narrower, and features a fixed-gap U-shaped terminal at the electrode end, which means no more adjustments needed. The spark plug in the center provides the shortest path for the flame to travel, providing efficient combustion

Will take you to picture of the new plug:

http://www.pickuptruck.com/html/auto...ord/f1505.html

 

Did you notice that the seating shoulder for the plug is below the threads,not above like the old style plugs...this should help with the threads being exposed to high temp gas blow by

 

I can't wait to see how much that plug will cost.