gcwaterski

I didn't change my diff fluid until 260,000 miles or so, when I was replacing my transmission for the second time lol

But my plugs were easy out at 160k and 280k...

F-150 freaak

So what do I do to get them out?

06F150CFCT

Read through some of this thread so you can get a better idea of what is involved...

https://www.f150forum.com/f4/5-4l-3v...09-07-a-56871/

F-150 freaak

How do I begin by taking them out? Just grab a spark plug wrench and start unwinding them. Then if one breaks I just use the Lisle tool to remove it? Anything else that I have to do?

Drooool

i did mine on monday. broke four and four came out clean. i was kinda freaked out to do them, especially when the first three broke. but i got the extractor from napa and it worked amazing! piece of cake and truck is running awesome! original plugs at 230xxxkms.

F-150 freaak

Do you just use a spark plug wrench to get em out?

Blown Ford

Its really not that bad. I go through plugs like crazy. Mine only last about 10,000 miles and she gets a new set every time I go to the track or dyno. I can change mine in just under 30mins. Since mine are in and out so often I don't have to worry about them sticking.

But to break it down for you here it goes. With the truck still warm not hot remove your coils. Take a small hose 3/8 fuel line works well. Attach it to your shop vac or other vaccum. Stick it down each to make sure you've removed any debris. Now break each plug loose. (It helps to have both a 3" and 6" extension for your spark plug socket.) 1/8-1/4 turn will be plenty on each plug. Spray some carb cleaner/starter fluid down around each plug. Let it soak. Come back after a few minutes and repeat if you please. Then proceed with the removal of each plug. Once complete apply a thin film of anti-sieze to each new plug on the slick part of the plug just above the threads. Now install and torque. Reinstall all coils and plug in anything you unplugged. Start the truck and make sure you didnt't leave anything unplugged or vac lines disconnected.

Bowers816

What about gaping.?
Will he know or need to know the gap spacing on the plugs.?

backinblack04

My uncle works for ford in Texas. He is a transmission tech and said the original plugs will have a white dot on top. Pull coil pack off and shine flashlight down to see if there is a dot then it's original plugs if no dot then they have been changed.

Blown Ford

They should be pre-gapped at .044 however I've heard of some folks running a gap as large as .054 and as small as .040. Always run the largest gap you can. It's a good idea to double check the gaps out of the box. Gapping the plugs also requires a special tool. BBR spark plug gapping tool 0507
Heres a little step by step from Autolite that can help.