Problem Description and Possible Solution
There is a technical service bulletin for the V8 engines regarding a possible problem with the spark plug being ejected from the cylinder head, damaging the threads in the spark plug hole. If the vehicle is under warranty, cylinder head replacement is recommended. If the vehicle is out of warranty, Ford authorized the use of a specific thread insert to repair the head.
Average mileage: 176,833 (76,000–298,305)
Engines affected: 5.4L V8, 6.8L V10
51 people reported this problem
Pulled out from getting gas and heard a loud pop. Took me a while to find that the #3 plug on the driverside blew out of the cylinder now I can't get a new pkug to thread in.
Spark plug blew out twice now on passenger side third one back. Is Ford fixing with the insert for free?
Year 2003 also has the problem! I have a 2003 Excursion and I've had 4 spark plugs blown all different ones!
BTW who cares what ford authorized!!! They should recall and fix their shitty crap!!!
In late July 2015 I was traveling one night on a side street when all of a sudden I heard a boom and knocking noise that sounded like a tire blow out. When I pulled to the side of the road I realized I still had the knocking noise. The spark plug had blown and was pounding against the fuel rail making the loud noise. The dealer I went to told me that a spark plug had come loose and blown and needed to be repaired. They installed a helicoil and replaced all 7 other plugs to ensure they were tightened down correctly and wouldn't blow again, and then sent me on my way. In November 2015 I was driving on the freeway when the car started sputtering almost like a fuel injection problem. I pulled over and heard a distinct hissing noise coming from the engine that I couldn't make out. I drove a little further and the noise appeared to go away. I took the vehicle to a repair shop and they told me I had an exhaust manifold leak. I was driving the truck to the dealer for repair when I heard a pop and the knocking noise again. Right away I knew that I had blown a plug. when I took it to the dealer they confirmed my suspicion and told me that I did not have an exhaust leak, but that I had a different blown plug, and that ford suggest replacing the head and that it was going to cost $5,000.00 dollars. I was very upset, because I was told by the other dealer that if they replaced the other spark plugs this wouldn't happen again. I towed the car home and as of yet, have not finished the repair. I cant afford to spend a thousand dollars every few months every time I blow a spark plug. I think this problem should be fixed by FMC
Driving down the highway about 65 then blam blow out broke the coilpack at the same time sounds costly havny figured out how to fix yet thanks Ford for the support
TThe problem just happened. It's in the shop now to try an d fix.
the front cylinder blew out the spark plug and broke the mount for the coil pack.
#3 plug drivers side blew out, looks like threads damaged
I had #9 cylinder blow the sparkplug out stripping the treads and braking the ingnition coil. I was traveling through NH, and there was a Ford Dealer there that was able to put a new tread insert, replaced the sparkplug And coil pak. but didn't set the timeing for the new pak seeing that I had replaced all of them last summer with a differant brand, the truck did run but not rite, I order one to match the others. I hopr the rest of the plugs don't blow out aswell. at $330.00 per cyl. might be cheaper to replace the heads.NEW.
I have owned this vehicle almost 2 years now and this is the third time the spark plug has blown and it has left me stranded. C'mon Ford this is awful!!! I think we need a recall, just because its an older vehicle shouldn't matter. I figure I just have 7 left to fix :(
Pulled out of parking lot, loud pop then a bunch of popping noises. Open the hood to see the #4 coil blown off. Did some research...crap...looking for a good repair guy around Fargo, ND that can make the repair instead of burning my money at the local Ford dealer
A spark plug blew out. Hasn't been fixed yet.
The rear plug on the driver's side blew out when I started pulling my trailer. $900 later, I am crossing my fingers and toes hoping it won't happen again before I can sell this crappy thing.
third time the plug has been fixed, its a different one each time.
Code 308 Misfire Cylinder 8. Ran very rough. Found coil pack damaged and exhaust leaking from plug on cylinder 8.
Spark plug blew out and replacing head
Spark blew out of cylinder 3. Cylinder has no tread inside
We had this problem occur around 170,000 and have since had it happen about 4 additional times (vehicle now has 201,000). It happens sporadically with no relation to starting engine, taking off from stop, or just driving. It seems to happen more often in the middle of a longer drive. We have had one spark plug retreaded but have since had a 2nd one blow.
#3 cylinder just blow out
Threads for plug are gone in #3 spark plug hole