Forum Discussion
DrewE
Jan 28, 2017Explorer II
gbopp wrote:
Didn't the early Ford V-10 have a problem with spark plugs blowing out because of weak or minimal threads?
It was/is a weakness of that vintage engine, yes; the head design had minimally adequate threaded thickness for the spark plugs, and it's pretty easy to overtorque them and strip out the threads leading to spark plug ejection. (The related V8's of the same era had the same problem.) Repair is possible, but I imagine it's not the easiest job especially with the wonderful (?) access the van chassis gives.
It's not a deal-breaker in my mind, as evidenced by my owning one of these rigs, but it is something to be aware of. When the spark plugs are changed, make thoroughly sure that whomever is doing it is using a torque wrench and following Ford's instructions. At only 7000 or so miles, the motorhome the poster is looking at should not need to have the spark plugs touched for a long time.
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