Swmpbgy1 wrote:
Greetings........
I just changed the plugs in my 07 Expedition EL.....correct me if I'm wrong, but your 07 should have the one piece spark plug...not the 2 piece that had the tendancy to break. I changed all 8 of mine in about 2 hours....NO breakage......all of mine were the one piece motorcraft plugs. They were the originals as the truck only has 45000 miles on it. They were a bit hard to break loose, but none broke.
Good luck......
Swmpbgy1
I'm getting a lot of semi-dated, conflicting information about exactly when the upgrade changes were made in the head and plug design. My belief is that the changes were made mid to late-year '07 and came to the showroom floor early-mid '08.
Looking at the new plugs, compared to the pictures of the old plugs (since I don't have mine out yet), they look almost identical. They obviously have a parting line between the thread and the tail, so I'm sticking with they're two piece. Everything I'm reading tells me they're somehow "improved". Don't know if, or to what degree that's true. It's also possible that they used a different plug number/type in the Expy's than in the 150's, so that may account for possible disparities, too. I'll give details when I get it finished.
