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The early ones had some issues around spark plugs. Early models had like 3-threads on the heads and shops tended to change their plugs like every other vehicle (sloppy). Typically over-torqued, then the heads would spit out the spark plugs.
Later V10s resolved this issue, but went to a plug design that tended to break off in the head necessitating a special tool to remove what remained of the plug.
In terms of "major faults" of motors, I don't think this is a big deal. Affected year ranges, off the top of my head, something like 1997-2003 (for what that is worth). If you own one of these, don't change plugs "just because" and when you do change plugs, you'll need to do it very carefully. I bought a set of tools and an inch-lb torque wrench to do it and did it over 48 hours - mainly to let plugs soak before trying removal. RE-installing is by-hand only and torque to inch-lbs.
If yours is 2003/2004+ (I think), you should be good.
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