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5.4L Spark Plugs Seizing Problems

Old 01-17-2011
  #21  
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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?
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Old 01-17-2011
  #22  
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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.
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Old 01-17-2011
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Originally Posted by Takeda View Post
Interesting theory Zach!

The only part I disagree with is with the anti-seize. In the video link posted by Dan, it shows putting Nickel anti-seize on the GND shield.
Check out this link, Nickel anti-seize is good for 2400F, which shouldn't burn off:

http://www.neverseezproducts.com/antiseize.htm
I wasnt aware it was good for that many degrees... Does the properties of it change though when it is warmed up?
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Old 01-17-2011
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Originally Posted by Trent View Post
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 heard they went to a conventional plug in late '07.
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Old 01-17-2011
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Originally Posted by zabeard View Post
I wasnt aware it was good for that many degrees... Does the properties of it change though when it is warmed up?
I don't know Zach.
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Old 01-17-2011
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Originally Posted by Takeda View Post
I heard they went to a conventional plug in late '07.
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?
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Old 01-17-2011
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Originally Posted by zabeard View Post
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:



Last edited by Takeda; 01-21-2011 at 11:36 AM.
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Old 01-17-2011
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Originally Posted by zabeard View Post
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?

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.
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Old 01-17-2011
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Originally Posted by Takeda View Post
Zach, you are correct, Champion is capitalizing on the 5.4L plug breakage problem, here is a video:

http://www.youtube.com/watch?v=DoSh9O3XOho


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.
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Old 01-17-2011
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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
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