Nissan Repair: Nissan Sentra 1.6 Overheating, nissan sentra, torque sequence

Question
My brother recently went to the trouble of replacing the headgasket on a 1.6 liter Nissan Sentra, problem is that it didn't cure the overheating problem. There is absolutely no water in the oil, and no oil in the water. It just gets compression pressure into the cooling system somehow. We took a compression gauge apart and used the adapter to hook our air compressor to it and checked all four cylinders and each of them caused bubbles immediately in the radiator. Any ideas?

Answer
Justin,

If you are getting bubbles in the radiator from all cylinders as you describe you have a defective head gasket.  I could not imagine a crack in a cylinder head that would run across all the cylinders.  Now, I have seen some old Chevy V6 engines that had this problem.  But, they were cast iron and your head is aluminum.  Go with a factory head gasket and make sure the head and block surface are flat and true and follow the torque sequence on the head to the letter.  I would go in torque increments of atleast four to get to the proper max torque reading with a good quality torque wrench.  Use no sealant on the head gasket and you should be fine.