I'll agree, I like ford. I went from ranger to explorer to expedition to excursion, and now I own two of them. I love my fords and wouldn't own anything else. The v10 that failed has 260k miles on it and has been largely trouble-free. Coil packs and plugs were done about 6-7k miles ago, I suspect they weren't torqued properly.
I do think that there was a mistake made by ford, though. The head has 4 threads in it for the plug. However the insert I put in has 12. They had room for more threads, but didn't utilize it. I feel this was a design flaw, even if it took 260k miles to occur. It's so extremely rare to hear of this issue happening with any other engine series, what's wrong with the 4.6/5.4/6.8 which has it happen frequently enough for them to be known for it?
This wasn't a heavy load trip, it was the family of 4 sitting on the turnpike for hours on end at 65mph with the cruise control on. I'll never know what triggered it for sure, but hopefully it does't happen again. I'll be checking all the other plugs to see that they're in snug for sure.
This post was edited by Fatjay at 05:13:29 08/30/15.
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