So today was the first experience with a blown out spark plug on my 6.8L. It has 111k on the original plugs. I was out in the middle of nowhere and was able to put the plug back in and drive 180 miles home with no problems. The plug, boot, and COP were just laying there when I opened the hood.

What are the chances that this plug just came loose and blew out and it will stay in until I can change it? Would there be any damage to the threads in the head?

What do you guys think?

 

Most the.time when plugs comeout they take the threads or at least damage them.i would pull it out and check the threads. I put a camera down the holes on mine. There not many threads down there.

 

If the repair is done, are they holding? I would prefer to keep this truck but don't want to keep fixing.

 

If you get a new insert fixes it pretty good

 

I had a plug come out and I checked the the threads with an inspection camera and they looked fine. I have heard that they can get loose and work their way out and not ruin the threads. I installed all new plugs and the blown plug torqued to spec. I have 6k on it so far so good. You are overdue for a plug change in my opinion so if you are careful with the change out and torque to spec. you should be ok. I think the blown plug, stripped threads happens when plugs are over torqued.

 

What handifletch said. I had a plug blow and threads were perfect. Screwed the plug in and replaced the coil.
10-20K miles later. No problems with it.

Kept the snapped coil as a souvenir!

 

This is a very informative specialty site on this with a temp fix to drive available for sale. Emergency Plug Kit
I am on a fishing trip in Canada and had one come out about 1 mile from where we are staying. Found a shop 3 miles away that was recomended by two people and drove it there after disconnecting fuel injector wiring. They are working on it as I type.
Looks like it would be good to have one for insurance. If I buy one, I'll never need it and if I don't buy one I will most certainly need it sometime down the road.

Blownoutsparkplug.com Ford Spark Plug Thread Repair