sethcooper73

I'm about to change my ignition coils and plugs and any help would be appreciated. I've heard it's best to do it cold and I've heard to do it while the engine is hot with an impact. Should I use penetrating oil on the plugs prior to pulling? Also, what should I do if I break a plug end?

I appreciate any help. Thanks.

2007 F150 5.4L

Jbrew

Figure out which year and engine you have and post back. I'm guessing it's a 150?

RLXXI

We must use the same crystal ball repair shop, mines not finished either.


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CollinM

Rofl impact? Don't even try. Ur heads will thank u.

Jbrew

I had one of those for awhile. Worked great at first. Then something happened to it. It didn't mater what you asked, - it associated everything with ****.

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AKBray907

Anyone who reads that an has any knowledge of fords before he put what year it was should know what he is talking about simpy by the methods he is talking about, and the issues he is having but since some of them want to be smart asses an not help ill fire this out here

First off get the lisle tool, it'll be better to have in hand as chances are some are gonna break, second of all there are all sorts of methods, run tech ton, impact, hot, penetrating oil. Really they're all hit or miss, personally I would use some penetrating fluid and run some techtron a couple days before and then I would remove on a cold engine, reason being as the engine heats up metal will expand, when its cool you can have a better chance of popping them out and then just be cautious. The best option though is to get the lisle tool and just do your best but prepare for the ones that could break.

Again there isn't a fool proof method as everyone has had different experiences but just get the lisle tool and then you'll be set no matter what happens

AKBray907

Alot of people try impacts to pop the plugs, thought being a quick torque and undo it and it might not break, alot of people have had luck with it. You don't use it to reinstall them but that's common sense

Jbrew

BS. Yea I disagree. If you want to hold hands and coddle these people, that's your prerogative. Oh, and good for you... But don't belittle others and I because of your problems.

Oh boy, you got me, I'm a Smart ***... Guess what that makes you....

Makes sense, - your only half right.

dnlow

This a great How-To on the plugs changes for the 5.4L.

https://www.f150forum.com/f72/how-sp...-3v-v8-116291/

I followed the suggestions and was able to do it fairly easily. Like others posted have the Lisle tool before hand so you can remove any plugs that break. I only had one break and the tool removed it easily.

AKBray907

Hmm what's the only truck in recent ford history an motor that would have the issues and or resolutions he is talking about, broken plug in 5.4 3v and 4.6 3v since they use the same heads . If you would've known that or had experience with it you wouldn't have answered how you did. I don't wanna hold their hands but the smart *** responses don't do anything and he provided enough info for anyone who has knowledge in the area to assist him