Just rebuilt my 1997 XJ 4.0 straight 6 cylinder engine everything working good then the number 2 cylinder exhaust valve starts taking water in and spitting the water out the exhaust pipe. took the head back off the head gasket was good. no water in the oil. sent the head in for pressure test and they did not find any issues. Put head back on with new head gasket and new head bolts work for one day no issues the next day the same thing happen again. Has any body come across this situation? Please help me.

 

The #11 head bolt goes into a water jacket (on my '93 4.0 anyway) I'd guess yours is the same. It needs sealer, and less torque than the other bolts. Hope this helps you.