1997 Ford Expedition Q&A

1997 Ford Expedition Question: cylinder # 2 keeps fouling out plug on 5.4 triton V8

Tried gunk head gasket sealer/repair and waited a few days and put new plug in....still fouling out plug...Expedition has 205,000 plus miles on it so I am guessing it is a head gasket?.... what can I expect a shop to charge me for repair and what all should I have done while they are doing it? -
Answer 1
Im thinking its bad or cracked rings on that cyl , no or r u thinking No compression on that cyl?? -