Should I replace my plugs?

[ticopowell]

Thanks, and yeah I saw the fiasco that you went through :/, not fun at all. I just called the stealership again and they said around $580 to replace them all, and that is if they do not break, then add $55 if one breaks, and up to 4 breaking is $160...
I am going to call around and see what other's price it out at in the area, and also search online to do it myself possible at the shop on base... they have most tools that I could ever need, but this is kinda special so ill see..
Thanks again, and any other input is always welcome!

[hampsterzone]

If you can have someone help you, buy your parts from Ford. Use the money you save from labor to buy all the parts you need to change. A.K.A. coil packs! Might as well do it all while you are doing it. Use a little bit of anti-seize but not too much! And put them in tight! Oh yeah my friend, GOOD LUCK!

[ticopowell]

Thanks again! , and that's the plan, there is a car club here and most people are willing to help out if needed , it's actually pretty handy.

[jmwilso2]

I insisted the dealership change the plugs when I bought my truck and I've actually made it my policy to loosen them off and re apply the anti sieze then reinstall them every 25000 to avoid the old stuck plug problem. Its a bit of a pain but I never need to worry.

Joe

[Jackpine]

Here's one "how-to": Sparkplug Change for 2004-2008 5.4 3V-Step by Step - F150online Forums

And another: Changed My Spark Plugs Today/ Writeup - F150online Forums

And yet another: Spark Plug Change on 2004-Early 2008 5.4 3V - F150online Forums

And finally, a technique when things go wrong: New method to extract porcelain from broken spark plugs - F150online Forums

I believe Ford is now recommending a plug change at 70-75K, rather than the old 100K, so you're about due. The BIG caution is "patience", and a cold engine as I recall (I did not read through those threads before posting and am working from what little memory I still have).

And, I believe, the important place for the anti-seize is on the porcelain nose of the plug, not just the threads, because that's where the carbon build-up causes them to bind (and break).

Good luck!

- Jack

[ticopowell]

jmwilso2, Great Idea! wish I had thought of that... and Thanks Jack for the links! I looked for a few but didnt find too much help... :/

[ticopowell]

I decided to wait until at least summer to change them, I put seafoam in the gas tank and I started getting a few mpg's more than before at start, and then part of my trip from utah I got 17.7 hand calculated mpg's!!!! I know a large part of that, probably 1-2mpg's, was from the wind, but still I am pretty happy about it!