oil on spark plug on 1997 Ford Thunderbird

my # 8 spark plug is constantly being saturated my oil . I have replace valve cover gaskets same thing. This only happens on the # 8 no where else

Asked by for the 1997 Ford Thunderbird
Sounds like some oil is getting past the piston rings. Major repairs are in order if this continues.
1 more answer
u have blown a seal ..mayb check and see about your o ring