Hey guys..

About to hit 80k miles. It about time to replace the plugs and wires. Are factory parts the way to go with the newer Fords? Or do you suggest after market?

Also do you suggest replacing the COP's while I am in their??

Thanks!

 

You don't have spark plug wires, only COP's.

4.6 or 5.4? If you have a 5.4, start reading all the broken spark plug threads. If it's a 4.6, use the factory Motorcraft plugs.

 

I may be able to offer some help. I have a 2005 F-150 5.4 3v with 200,000 miles on it. The first time I had the plugs changed; the dealer did it and broke two. Luckily they stuck with there quote and only charged me $250. Labor. When the TSB came out, they told me it would be $700.00 to $5000.00 to do the plugs. I did a lot or research and did it my self and ALL slugs came out clean (no breaking). It took me 3 hours.
Here is how I did it:
First step: I bought three cans of Seafoam and added one to my gas tank. I ran that entire can through before the next step.
Second step: Warm up your motor and with the truck running pull your vacuum line that goes to your brakes. Pour the entire can of Seafoam in and then turn off the motor. Leave it for one hour then start it. It may be hard to start so feather the pedal a little. LOTS of smoke will come out. Let it idle for about 10 min, and then take it for a spin. Repeat with the second can. This will clear out all carbon.
The last thing you do before D-day is spray a little PB blaster down each plug the day before.

Buy the extraction tool just in case but I didn't need to use it and resold it on e-bay. The lisle 65600 is the one I bought for about $80.00 and replace your plugs with the one piece Champion 7879. My COPs were starting to go so I bought the MSD 82438 and work well.
Hope this helps.
Ryno6

 

Talk to your dealer. Ask about the charge and their success rate with these new plags. My dealer has a near perfect record. They changed mine at 65,500 and just recently changed another members at 133,000 with no breakage. Also consider having them change the boots. I went back with Motorcraft as there have been issues with the other brands. Just make sure they use nickel anti=sieze on the shanks.

Do a search on the sparkplug TSB and do some reading.

 

I did mine last March had over 140,000 miles @ very experienced mechanic. 6 of 8 broke he did the whole big show with soaking the plugs etc... none fell in though!!! Put in Champions, two broke same day, he replaced those, good ever since.