5.4 plug issues
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Junior User
Joined: Sep 2007
Posts: 64
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5.4 plug issues
I have a question. i have read so many posts from people so scared of changing the plugs in their engines and wont do it untill 100,000 miles or get rid of the truck. i as well have a 2005 f 150 with the 5.4. it has 11,000 miles on it. yes the plug design sucks and could cost serious money to fix down the road. But why wait i plan on taking the plugs out now and applying a little never seize to the threads and the part of the plug shell giving all the problems, also add a little dielectric grease to the coil boot and cap seals to keep the water out of the plug well. I would think waiting so long would just make it worse and be dreading it all the while.
5th Wheeling
Joined: Sep 2007
Posts: 44
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From: Spanish Springs, Nevada
Changing plugs in the 5.4...
I've read all that, too. I talked to a guy that has worked on them and he told me they are a piece of cake. I think all the chatter is another instance of a lot of noise by a few that have had the problem. I'll be keeping my fingers crossed when it's time to change mine in about eight years! 
Post Fiend
Joined: Mar 2005
Posts: 8,542
Likes: 5
From: Louisiana
I asked one ford dealer what was the price to change the spark plugs on a 04 F150 with a 5.4
Their response was: IF they plugs break, you pay for the damages.
That was before they gave the the $400 + something price tag.
I'm going to do this soon and follow the TSB directions, and I don't think I'll have any problems. Sounds like Kroil is a big key to doing this successfully.
Their response was: IF they plugs break, you pay for the damages.
That was before they gave the the $400 + something price tag.
I'm going to do this soon and follow the TSB directions, and I don't think I'll have any problems. Sounds like Kroil is a big key to doing this successfully.
Senior User
Joined: Oct 2006
Posts: 199
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From: Florida
It is my understanding that this spark plug problem only effects 04 or 05 models. I have a 2007, do I need to worry?
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Senior User
Joined: Aug 2007
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Plug Problem
I to fell victim. I've got 115k miles on it and I was told at 40k, 72k, and 85k by the dealer to wait until I absolutely have to before I change them-so I did. All of the tricks have been followed, the porcellen has been chiselled away and an extractor tool is being used on it as we speak. 3 of 8 broke. Hopefully all goes well with the extractor tool.
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Senior User
Joined: Aug 2007
Posts: 155
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I had the same question and concern. They said that whatever was used had some sort of vacuum or suction to it and won't be a propblem. I was just told that the extraction will start in the morning so I plan to go in to have a look at it for myself before they start work.
Elder User
Joined: Jul 2006
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Originally Posted by bamacommander
It is my understanding that this spark plug problem only effects 04 or 05 models. I have a 2007, do I need to worry?
More Turbo
Joined: Sep 2007
Posts: 552
Likes: 9
oh boy!!
I think all the chatter is another instance of a lot of noise by a few that have had the problem. I'll be keeping my fingers crossed
We will soon see you non-believers of this plug problem. I too thought I had the problem under control till I broke one of mine. cost me several nights of sleep. I wont go into it just my 2 cents. 04 fx4 5.4 44,000 miles.
We will soon see you non-believers of this plug problem. I too thought I had the problem under control till I broke one of mine. cost me several nights of sleep. I wont go into it just my 2 cents. 04 fx4 5.4 44,000 miles.
Senior User
Joined: Aug 2007
Posts: 155
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Regardless of this plug issue, I have 100% enjoyed my truck. I originally purchased (borrowed) a Titan and returned it 
, I kept my reciept. I have not regretted getting the F150 instead and I have no reason to not get another, despite this sugery it's currently under. I have 115k miles and I really have not had a problem with the truck outside the normal wear and tear and the cost of that.
, I kept my reciept. I have not regretted getting the F150 instead and I have no reason to not get another, despite this sugery it's currently under. I have 115k miles and I really have not had a problem with the truck outside the normal wear and tear and the cost of that.
Senior User
Joined: Aug 2007
Posts: 155
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Impact tool didn't work. The plugs were not able to be extracted. The plugs that are stuck are, of course on both sides of the engine, so I am being told that they need to remove the heads to be able to get them out now. Not good news--$2100.00 and 3 days. This is probably pushing to be about 1/2 the cost of a new long block? Any other suggestions or thoughts before I pull the trigger on the head removal?
Senior User
Joined: Dec 2005
Posts: 361
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From: Lexington,SC
The Ford TSB covers plug extraction with the heads on. Motorcraft has a special plug tool. Ask them why they are taking the heads off when the TSB specifically spells out how to extract the remnants of the plug WITHOUT removing the heads.