Let the engine cool over night. Then remove the spark plugs one at a time and inspect for the moist plug. That will be the sick cylinder. But, you are already into a head gasket job here; at least to fix it correctly. You can sometimes buy some time with the sealant, but the realiability factor has always kept me honest. Pony up and fix it right.......

John Luttrell
2001 4x4 short cab, 3 inch lift with 33 inch mudders and Powertrax no-slip in the rear


1991 Jeep YJ, 4 inch suspension lift on 33" BFG's