NASSTY

X2
They are way easier than my 06 F150 or my 01 F250 or my 92 Bronco.

Rob1334

Ya I've changed plugs before, usually it takes half a case of beer and bust up at least 4 knuckles, I guess I am just not optimistic hearing people say its easy haha.

Usually by the time the kids are sleeping for the evening and I get garage time I like to be efficient as possible and have everything ready I need, if its the first time I do something I have been looking on YouTube first just to see what I'm getting into. Oh well maybe just go try now..

HCFX2013

Be advised that I used 2 or 3 extensions on a spark plug socket. They are wayyyy down deep in there. The coils are about 5-6" themselves. But it's easy, takes an hour tops. Maybe a beer or two. Easier than changing oil. I had a very tough time getting the last plug back in though, it took a bit of strength to put it back in. Must've been the carbon buildup on the thread making it pretty tight. They don't require alot of torque at all.

scap99

That's scary. Sounds like you may have cross-threaded it.

Rob1334

Ok just did one this is going to go fast haha..

HCFX2013

I don't think I did. Most of them were pretty tough for the first couple of turns but they loosened up once they had a couple of turns in. The coil slid back in fine so I don't think it was crooked.

scap99

Cool. I hope you didn't.

A little dab of nickel anti-seize helps. Like 1/10th of a cc would do all 6 plugs...

FST150

Just checked all of mine and finished up about 10 min ago. They were all at .032 but 1( it was .035) which amazed me. But my idle isn't too bad I just thought I'd check them just in case. I did add dielectric grease to the end of all the boots that wasnt on there from the factory. I have a 2012 Eco.

Rob1334

OK finished up, took me about an hour as my neighbor was over and we were drinking garage sodas. It would have gone faster if it wasn't so damn hot in my garage and my 2 year old didn't wake up, also watching the nascar truck race on dirt.

I used a 5/8 deep socket with about a 10" extension, and a smaller socket with I think was a 5/16 on it to take the coil bolt off, same as the one used on the battery terminal (I took it off just in case). Use a magnet to pull the plug out. Toughest one was back passenger side because of two large hoses above it (not sure what they were), driver side wasn't bad once you get the oil breather I think it was on the front one and the rear wasn't bad, just a push in pin on the underside of that back pin.

I took longer I think to figure out how the engine cover came off, I am use to them being held on by at least a single bolt or two, it took me a while to realize it was just lifting it off (didn't want to break anything lol).

My plugs were: 2 at 34, a 33, 32, and a 38. Gapped them to 30 the best I could. Runs MUCH smoother at idle, I couldn't believe it. I should have done this a long time ago. And I owe you guys a beer, you were right it is pretty easy to do, not sure why I was worried about it. So easy I should have made a youtube video lol.

Bills96TA

After a few episodes of rough idle and some minor roughness at low speeds I decided to do my plugs as well. As others have said its not a difficult task just takes a little finagling to get around a few things. They ranged from .42 all the way .48 (factory plugs with about 12k on them in a 2012 FX4). I gapped them all back to .32 and it does seem to idle better and I have only driven it 10 miles so the driving feel test isn't enough. I don't feel there was enough change though to say yes or no it helped at this point. There was minor carbon on all the plugs as well.

The thing I noticed that bothered me was that it appears I am missing a bolt in my MAP sensor (what it looks like, see picture below). Is there supposed to be two bolts in there, I have never seen one with only one before and under boost I wonder if its bending back (its located dead center on top of the intake under the cover). It would have rolled off the assembly line this way as its never been touched.