April 18, 2010i have a 99 expo with the 5.4 triton. i recently started hearing a little noise when i would first start it up but it didn`t last long. then he other day it did it and when i went to take off i heard a loud pop and bangging sound. well i shut it off and got to look at it i noticed the second spark plug from the back blew out and broke the coil pack. i tried to put in a spark plug but i couldn`t get it to take. i think the threads on the block are stripped becuase the spark plugs thread looked ok on the plug that blew out. has anybody had this happen to them and if so how did you fix it. coul really use some help on this one. hey thermo do you have any ideas for me thanks.
Forums : Expedition : 5.4 liter triton spark plug blew out (649 Views)
Subscribers : rezride99
April 19, 2010That is a known problem with some years of the 5.4L. Try doing a search on this site about that. I know there was lots of discussion regarding that issue. You might even call the dealership. They should know the issue.
The bitterness of poor quality remains long after the sweetness of a low price is forgotten.
April 19, 2010rezride, I have the answer for you, but you may not like it. This is a common problem with our engines and odds are you pulled all the threads out (there was only 3 in an aluminum head from the factory). You have 3 options as I see it. You can go to your local auto parts store, get a new head and bolt it on, run you about $800 to do ($400 for the head, $200 for the top end rebuild kit, another $60 for the head bolts, and the rest in miscellaneous stuff). Option 2 is to pull the current head, get a kit from Timesert and then bore out the one (or more) spark plug holes and install their insert/sleeve. Going to run you about $400-500 depending on whether you do the 1 plug hole or up to 8, the Timeserts are $12 each plus S&H). Your third/final option is to simply get your hands on a Timesert kit, get you the Timesert sleeve, and then bore out the old threads, tap the new hole and then insert the sleeve. Keep in mind, with this you are going to create metal shavings and cleaning out the cylinder before putting the sleeve in will be critical!!!!! As you can imagine, if you leave some metal behind, it can get ugly really fast.
Now, you happen to be in luck as I own one of these Timesert kits (runs about $350 for the kit plus 4 inserts). I have used up all the inserts, but if you need me to mail the kit to you to use, I am willing to do that. Then all you have to do is get the number of inserts that you want to use. You can look up the places that sell the inserts. If you decide to pull the head to fix the plug hole, I would recommend pulling the other head too and doing all 8 pug holes so you never have to worry about this problem in the future (this is what I did). But, it is up to you. Just a hint though, pulling the head will be a full weekend affair as it will take you about 20 hours to disassemble, put in the sleeves, and then re-assemble the engine. If you do this route, let me know as the setting up of the timing chains is not very straight forward and I will help you through this.
If you have any further questions, just ask.
Chris "Thermo" Coleman, Nukie the radioactive 97 Ford X, and K`Re Ann the 03 Jag X
April 19, 2010first off i wanna thank you thermo for the offer of useing your kit. i called around a found a shop that will do it for me fairly resonable. so i am just gonna take it to the shop. then after i pay off my expo i will buy the kit and do all 8 cyclinders. i aso wanna say that your a real asset to this forum and we are lucky to have you. i called the local ford dealership in spokane washington and the guy said he never heard of the timesert kit. right there i know not to bring it to them. thanks for all the info and have a good day. i know if i need anymore help i will ask you. again thank you.