What a pain. There has to be a trick to it though. Do all late model F-150's use a two-piece plug? Or, did they get smart and change it?

 

I think the actual head was redesigned in 07 which fixed the issue from happening. I'm not sure if the plug itself was changed though.

 

I wasnt aware it was good for that many degrees... Does the properties of it change though when it is warmed up?

 

I heard they went to a conventional plug in late '07.

 

I don't know Zach.

 

I'm not so sure about that bob. I know they changed the design but I thought it was still a plug with a long shield.

You do know that champion makes a single piece plug for 04-07 right?

 

Here are some photos:

2005 F-150 5.4L:






2008 F-150 5.4L:

 

Zach, you are correct, Champion is capitalizing on the 5.4L plug breakage problem, here is a video:



However, I have a pet peeve, I DO NOT use Champion plugs in ANYTHING!


I did find some new news: I have heard that Ford dealers have been using a Seafoam treatment, and letting it set overnight before removing the plugs, and have good results.

 

Yeah some of the guys on other sites have reported the Champion plugs not being as reliable as the stock ones too. I wouldn't run them, I run Champion in my lawnmower, not my daily driver.

 

I did find that there is a class action law suit against Ford for the 5.4L spark plug problem:

http://www.sfmslaw.com/class-action-...ses.php?id=996